摘要： It’s ten years since the scientist on his life’s work of discoverig the valuable chemical. A. made for B. set out C. took off D. turned up
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—Hurry up, Michael! It’s ten to three.
—Goodness me! The class_______. I’ll be late again.
A. must begin B. may begin C. should have begun D. must have begun
查看习题详情和答案>>—It is the first time that I ________ here in Hong Kong.
—What great changes！It’s ten years since I ________here last time.
A．have been；came???????????????????? B．have been；have come
C．am；came?????????????????????? ???? D．was；have been
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