20. Mom was singing a lullaby to my baby sister while rocking the cradle with a gentle backwards and forwards ______.
A: A)process
B: B)motion
C: C)action
D: D)advancement
A: A)process
B: B)motion
C: C)action
D: D)advancement
举一反三
- Who was the bench for? A: My Mom B: A Customer C: My Sister D: My Wife
- My coat is red, while my _____ is blue. A: sister B: sister's C: sisters D: sisters'
- I heard my sister singing an English song.
- backwards and forwards A: 背景经历 B: 前面后面 C: 来回地 D: 分道扬镳
- My sister ______ after her baby carefully. look