1.Let's go fishing

2. in my class is shorter than Nam

3. going fishing

4.fatest one in my class

5.any clocks

B.

1. is_will plant

2.do you practice

3.playing

4.have been

5.didn't learn

C.

1. A robot can do much different things

2.How many films have they seen this week?

3. How often does she practice playing tennis?

4.Ha Long Bay is the most beautiful in VietNam

5.Lan moved to the new house yesterday

6.She does aerobics to keep fit

7. We shouldn't litter in our place

8.Don't play too much games, it is not good for your health???

9.Lan is the best at English in my class

10.If we learn harder, we will pass the exam next week

.