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：
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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

please stand by me all the time all the time all the 用all day;all the time;all the year round;all by oneself;这四个词组造句 all the time 是啥啊, All The Time 歌词 Thinking all the time love,all the time. all the time all the time近义词 thanks all the time all the time by the time ,by then By the time by the time 4.by the time we had done half of the job we were all spent. I get by all the time on a shelf above the door. My brother learns English by himself at home ______.A. all the same B. all the time C. all times D. all the times 用all the time造句