Dogs are too _____ to take care of.
| A．difficult | B．more difficult | C．most difficult | D．the most difficult |
____ old man behind Tom is _____ university teacher.
| A．An; an | B．A; the | C．The; a | D．The; an |
– Do you know ________?
– Sorry, I don’t know.
A. where has he gone
B. when will he arrive home tomorrow
C. what Jim was doing at this time yesterday
– _________
– It’s April 23rd.
A. What’s the date today?
B. What day is it today?
C. What’s the time now?
– We have finished all the work, Mr. Wang.
– _________, boys and girls! Let’s have a rest.
A. Good luck B. Well done C. I’m afraid not
– Must I finish my homework now?
– No, you_________. You may do it tomorrow.
A. mustn’t B. can’t C. don’t have to