根据句意，用所给动词的适当形式填空。1. WewillhaveapicniconMayDayifit

问题详情：

根据句意，用所给动词的适当形式填空。

1. We will have a picnic on May day if it _______(not rain).

2. He ______ (wash) his car when I went to visit him yesterday.

3. We are all working hard ______(realize)the China’s Dream.

4. In the past few weeks, many special things _________(take) place in the world.

5. As we all know PM2.5 ________(cause) by air pollution in some parts of the country.

【回答】

1. doesn’t              2. was washing     3. to realize  4. have taken    5. is caused 

知识点：语法填空

题型：完成句子