On birthday, they buy flowers_________ birthday presents.
A. for B. as C. to
— ______ did you visit the Great Wall?
— Last Sunday.
| A．Where | B．What | C．When | D．How |
Roast duck is one of _______ dishes in Beijing.
| A．delicious | B．more delicious | C．most delicious | D．the most delicious |
I’d like to go swimming with you, ______ I am too busy today.
| A．but | B．and | C．so | D．or |
I ______ in the hospital yesterday. I had to look after my sick mother.
| A．am | B．was | C．are | D．were |
— May I smoke here?
— No, you ______ . This is a no-smoking room.
| A．needn’t | B．mustn’t | C．couldn’t | D．wouldn’t |