根据句意,用所给动词的适当形式填空。 小题1:We will have a picnic on May Day if it _______(not rain). 小题2:He ______ (wash) his car when I went to visit him yesterday. 小题3:We are all working hard ______(realize)the China’s Dream. 小题4:In the past few weeks, many special things _________(take) place in the world. 小题5:As we all know PM2.5 ________(cause) by air pollution in some parts of the country. |