问题

He _______ busy yesterday, or he _______ you with your experiment.
A:was; had helped
B:was; would have helped
C:had been; would have helped
D:were; would have helped
B:was; would have helped
C:had been; would have helped
D:were; would have helped
正确答案是:
同类题型
US they focus on creativethinking skills, _____ in China they only focus on theory
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Who will win(赢)the race(比赛)—It’s hard to say. Tony often runs Jim.
Peter is never late for school, ____ he_____. He always comes on time.