—I’m terribly sorry to have given you so much trouble.
— ______
A. Don’t mention it! B. How come?
C. That’s all right. D. So what?
You may ______ it that Jennifer will come and help us if we are in trouble.
A. rely on B. carry on C. base on D. take on
How long do you think it was ______ he got home in such bad weather?
A. when B. since C. that D. before
—We are worried about Tom. Why hasn’t he come back?
—Don’t worry. He ______ in a traffic jam.
A. might be caught B. may have been caught
C. can have been caught D. should have been caught
He is busy preparing a secret present for his Mum, ______ is cheap but special.
A. one what B. what C. one that D. that
Jack, who claimed ______ everything clearly, however, he told a lie.
A. to have heard B. to hear C. having heard D. hearing
