i'am very happy that good weather _______at lastA arrivedB has arrivedC arrivesD arrive 答案是B,我不明白,为什么不选C

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i'am very happy that good weather _______at lastA arrivedB has arrivedC arrivesD arrive 答案是B,我不明白,为什么不选C
i'am very happy that good weather _______at last
A arrived
B has arrived
C arrives
D arrive 答案是B,我不明白,为什么不选C

i'am very happy that good weather _______at lastA arrivedB has arrivedC arrivesD arrive 答案是B,我不明白,为什么不选C
good weather 已经来了,所以I 才会 very happy,故用完成时has arrived
C其实也是可以的,但没有B要好

强调完成。

后面有一个at last 说明good weather 这件事已经发生了！所以要用现在完成时！

这个要根据具体的语境来选择的，选C 表达一种强调，好天气的到来使我能够做成某事，这个事情已经完成或者能够完成了，对此表达一种庆幸的感情。其实选A B C在语法上都说的过去。
比如： I don't know how to mend the machine. I am very happy that you have come here....

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这个要根据具体的语境来选择的，选C 表达一种强调，好天气的到来使我能够做成某事，这个事情已经完成或者能够完成了，对此表达一种庆幸的感情。其实选A B C在语法上都说的过去。
比如： I don't know how to mend the machine. I am very happy that you have come here.

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