________ begin their existence as ice crystals over most of the earth seems likely.

Câu hỏi :

________ begin their existence as ice crystals over most of the earth seems likely.

A Raindrops

B If raindrops

C What if raindrops

D That raindrops

* Đáp án

D

* Hướng dẫn giải

Phương pháp giải:

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