—Were you worried about your son last night?
—Yes. It was________that I went to bed.
A.until he returned B.until he did return
C.not until he returned D.not until did he return
So sudden ________that the enemy had no time to escape.
A. did the attack B. the attack did
C. was the attack D. the attack was
If he____ to the teacher attentively, he____the answer to the problem now.
A.had listened, would have known B.listened, would know
C.listened, would have known D.had listened, would know
— What do you think of my composition?
— It_____well______ a few spelling mistakes.
A.reads; except for B.read; besides C.is read; except for D.is read; besides
I used to drink a lot of tea but these days I________coffee.
A.prefer B.preferred C.have preferred D.am preferring
—Did Linda see the traffic accident?
—No, no sooner ________ than it happened.
A.had she gone B.she had gone
C.has she gone D.she has gone
