Let's learn & Do a survey第三题答案
略
Let's check & Let's wrap it up第一题答案
1-B-a 2-D-d 3-C-b 4-A-c
Let's check & Let's wrap it up第二题答案
go to bed; go shopping
play basketball; play ping-pong
Let's check & Let's wrap it up第三题答案
1. on
2. up
3. in
4. with
5. at