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
—I’m thinking about withdraw (退出)from the committee.
—Think it over. Once you decide, you won’t be ______ to the committee again.
A. adopted B. admitted C. adapted. D.allowed
It was ______ his office.
A. not until the rain stopped did he leave
B. not until did the rain stop that he left
C. not until the rain stopped when he left
D. not until the rain stopped that he left
