用所给的单词的适当形式填空（答案要告诉我为什么这样做）

用所给的单词的适当形式填空（答案要告诉我为什么这样做）
Look!The students_____________（have）English class now.
Please give this message to him when he_________(come)back.
She lives in the_________(five)floor of the building.
He is _______(tall)than any other boy in his class.
5. I _____(shake)hands with Miss Liao and Mr Gao yesterday.
6.It _______(be)rainy yesterday afternoon.
7.I______(drop)my glasses in the swimming pool yesterday.