The children _____ on the playground when I left school.
A.were playing
B.are playing
C. was playing
When I was a child, I used to ___________ chocolate.
| A．liking | B．like | C．liked | D．likes |
I ___________ frustrated when I wasn’t sure of the correct answer.
| A．may be | B．used to | C．used to be | D．use to be |
--Can I get you a drink? --That’s very nice of you. I’ve already got _____.
| A．it | B．one | C．that | D．this |
____ of the two new books are interesting.
| A．All | B．Both | C．Any | D．Either |
September 10th is the ________.
A. Children’s Day B. Children Day
B. Teachers’ Day D. Teacher’s Day