Earthquakes always happen , so it is difficult to know when they come.
---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing.
I tried several jackets on ,but _____of them fit me well.
We should never ________till tomorrow what we can do today .
This maths problem is so difficult that only _____students can work it out.A a few B few C a little D little
Hurry up , ________you will be late for the meeting.