By the time all the gifts were opened,the atmosphere_____ to calm down.A.beganB.beginsC.has gegunD.is beginning正确答案是:

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By the time all the gifts were opened,the atmosphere_____ to calm down.A.beganB.beginsC.has gegunD.is beginning正确答案是:
By the time all the gifts were opened,the atmosphere_____ to calm down.
A.began
B.begins
C.has gegun
D.is beginning
正确答案是:

By the time all the gifts were opened,the atmosphere_____ to calm down.A.beganB.beginsC.has gegunD.is beginning正确答案是:
正确答案是:A
分析题目:考察时态的前后一致
分析解释一下四个选项:都是开始的意思,只有A用的是一般过去时,与were相对应
全句的意思是:当所有的礼物都被打开后,气氛才开始平静下来.

A begin是个瞬间动词 整句都是过去 所以B C D 都排出

A

A.began 过去时

A

A