The Greens _____using WeChat _____ QQ, because it’ s more convenient.
A. prefer; to using
B. prefers; to use
C. prefers; to using
--____________?
--I’d like to see that red dress.
| A．What can I do for you? | B．Do you want anything? |
| C．What do you like? | D．What will you do? |
Mary keeps talking about the party. She had a very good time,_______?
| A．hadn’t she | B．had she |
| C．didn’t she | D．did she |
Don’t put off today’s work for tomorrow. I mean, today’s work______ today.
| A．may do | B．must do | C．may be done | D．must be done |
Most people _______when the big earthquake took place in that area.
| A．are sleeping | B．were sleeping |
| C．slept | D．sleep |
Look! What a clean room! Who_______ it?
| A．has tidied | B．is tidying | C．will tidy | D．tidied |