Name: __ Class: 10.40 1. Ididn't enjoy the hour because 1 couldn't __ with any of the main characters. D. identifiable A. identified WORD FORMATION B. popularty C. popularity 3. Most definitions of groenhouse gas emissions __ mengy include considerations of environmental aspects such as and economic aspects such as energy poverty. D. sustainably A. mustainable B. identify 2. He is a __ teen idol around the world because all reenagers know him. D. popularize A. popular B. sustain C. sustainability 4. His father was a tailor who __ crash; his mother was a homemaker. a clothing store but lost it in the 1929 stock market A. owns B. own D. owner 5. Some of these young musicians are __ talented. C. owned A. credible B. incredibility D. incredibly C. incredible 6. All the English teams were __ in the early stages of the competition. A. climinated B. elimination C. eliminator D. eliminable 7. When kids perform housekeeping they learn to __ all of their parents'hard work around the house. A. appreciative B. appreciation C. appreciate D. appreciably 5. Practicing housework will help kids __ valuable life skills that they will use throughout their entire lives. A. development B. develop C. developer D. developed p. Doing chores as a family will help __ family values. A. strengthless B. strong C. strength D. strengthen 10. Nguyen Thuc Thuy Tien left a positive __ on both judges and audience because of her riendliness and natural beauty. A. impression B. impressive C. impressed D. impressionism 1. I didn't enjoy the __ because I couldn't cope with any of the main characters. A. performer B. performance C. performable D. perform 12. More activities should be organized to raise people's awareness of. __ .problems. A. environment B. environmental C. environmentalist D. environmentally 3. Many new car models have attracted great __ at the exhibitions. A. attend B. attention C. attentive D. attentively 4. Turning off all household appliances can prevent __ .situations such as a fire or an explosi A. danger B. dangerous C. dangerously D. endanger 15. Recycling can protect natural resources and prevent __

## Answer Key and Explanations:<br /><br />**Word Formation:**<br /><br />1. **B. identify** - The sentence needs a verb to complete the meaning. "Identify" fits grammatically and makes sense in the context. <br />2. **A. popular** - The sentence needs an adjective to describe the teen idol. "Popular" is the correct adjective form.<br />3. **C. sustainability** - The sentence needs a noun to refer to the concept of "sustainable development." "Sustainability" is the correct noun form.<br />4. **C. owned** - The sentence needs a past tense verb to describe the father's action. "Owned" is the past tense of "own."<br />5. **D. incredibly** - The sentence needs an adverb to modify the adjective "talented." "Incredibly" is the correct adverb form.<br />6. **A. eliminated** - The sentence needs a past tense verb to describe the action of the English teams. "Eliminated" is the past tense of "eliminate."<br />7. **C. appreciate** - The sentence needs a verb to complete the meaning. "Appreciate" fits grammatically and makes sense in the context.<br />8. **B. develop** - The sentence needs a verb to complete the meaning. "Develop" fits grammatically and makes sense in the context.<br />9. **D. strengthen** - The sentence needs a verb to complete the meaning. "Strengthen" fits grammatically and makes sense in the context.<br />10. **A. impression** - The sentence needs a noun to refer to the positive impact left by Nguyen Thuc Thuy Tien. "Impression" is the correct noun form.<br />11. **B. performance** - The sentence needs a noun to refer to the event that the speaker didn't enjoy. "Performance" is the correct noun form.<br />12. **B. environmental** - The sentence needs an adjective to modify the noun "problems." "Environmental" is the correct adjective form.<br />13. **B. attention** - The sentence needs a noun to refer to the interest generated by the new car models. "Attention" is the correct noun form.<br />14. **A. danger** - The sentence needs a noun to refer to the potential risks of not turning off appliances. "Danger" is the correct noun form.<br />15. **C. pollution** - The sentence needs a noun to refer to the negative impact that recycling can prevent. "Pollution" is the correct noun form. <br /><br />**Explanation:**<br /><br />This exercise focuses on word formation, specifically identifying the correct form of a word based on its grammatical function in a sentence. The correct answers are chosen by considering the part of speech needed in each sentence and selecting the appropriate form of the given word. <br />