1. There is one mistake in each of the following sentences.Find out and correct it. 1.He has waited there for a quarter past six. (1) .............. 2. Surface mail is many cheaper than air mail. (2)............. 3.They do their best to keeping the family happy.(3)............ 4.The armchair is in the living room , among the television and sofa. (4)........... 5. Tourist usually have a bus to the countryside. (5).......... Mong mn giúp mik🙆