Question

【题目】飞机起飞的时候天正下着大雨.
Itbeavily when the plane took off.

Answer 1

【答案】was raining
【解析】考查过去进行时。根据后文took off，可知事情发生在国去，故用过去进行时。结构was/were +doing. 故填was raining。