Exercise 1. Write the correct form of each verb in brackets. 1. If it (be) __ sunny next week, we (plant) __ the vegetables. 2. If we (recycle) __ more, we (help) __ our Earth. 3. We (save) __ a lot of trees if we (not waste) __ so much paper. 4. More people (have) __ fresh water if we only (use) __ the water we 5. If the river (not be) __ dirty, there (be) __ more fish. 6. If the Earth (be) __ warmer, the sea level (rise) __ 7. If the sea level (rise) __ , some countries (disappear) __ 8. If we (reduce) __ soil pollution, we (have) __ enough food to eat. 9. If we (not have) __ enough food, we (be) __ hungry. 10. If we (be) __ hungry, we (be) __ tired.

<div class="content-answer-1 enable-event-click" style="overflow-x:auto;text-justify:inter-word;text-align:justify"><p>1.is - will plant</p><br /><p>2.recycle - will help</p><br /><p>3.will save - don't waste</p><br /><p>4.will have - use</p><br /><p>5. isn't - will be</p><br /><p>6. is - will rise</p><br /><p>7.rises - will disappear</p><br /><p>8.reduce - will have</p><br /><p>9. don't have - will be</p><br /><p>10.are - will be </p><br /><p>- Câu điều kiện loại 1</p><br /><p>- If + S + V(s/es) + O ,  S + will + V nguyên + O </p><br /><p>- S + will + V nguyên + if + S + V(s/es) + O </p><br /><p>- Unless = If ... not</p><br /><p>- Diễn tả giả thiết có thể xảy ra ở hiện tại hoặc tương lai </p><br /><p><span style="text-decoration: underline;">Thì Tương Lai Đơn :</span> </p><br /><p>+) S + will + V  nguyên + O </p><br /><p>-) S + won't + V nguyên + O</p><br /><p>?) Will + S + V nguyên + O ? </p><br /><p><span style="text-decoration: underline;">Thì Hiện Tại Đơn : </span></p><br /><p>Động từ tobe : I + am , he/she/it + is , we/you/they + are</p><br /><p>+) S + is/am/are + ...</p><br /><p>-) S + is/am/are + not + ... </p><br /><p>?) Is/am/are + S + ... ? </p><br /><p>Động từ thường :</p><br /><p>+) S + V(s/es) + O </p><br /><p>-) S + don't/doesn't + V nguyên + O </p><br /><p>?) Do/does + S + V nguyên + O ? </p><br /><p></p></div><div class="pt12"><div></div></div>