周公“制礼作乐”，本质上是对殷商“先鬼而后礼”的反动。()
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If John_____to the university, he would have to work hard.
A. had gone
B. were to go
C. went
D. was to go
Which of the following is NOT an imperative sentence？
A. Don"t let me interrupt you.
B. You be quiet.
C. Don"t let him disturb us.
D. If only you could stand on my side.
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