题目内容

Sorry, I am too busy now. If I _____ time, I would certainly go for an outing with you.

A. have had
B. had had
C. have
D. had

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Had they known what was coming next, they _____ second thoughts.

A. may have
B. could have
C. must have had
D. might have had

Jack is a great talker. It’s high time that he _____ something instead of just talking.

A. will do
B. has done
C. do
D. did

_____ the morning train, he would not have been late for the meeting.

A. Did he catch
B. Should he catch
C. Has he caught
D. Had he caught

People are recycling many things which they _____ away in the past.

A. had thrown
B. will be throwing
C. were throwing
D. would have thrown

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