9.Jack and Ketty_______ in the lake. Let’s join them,shall we?
A. swim B. have swum C. swam D. are swimming
10.It’s six in the afternoon. The Greens_______ lunch together.
A. has B. are having C. have had D. had had
一. 写出下列动词的现在分词形式
work_______ sing_______ play___ __ study_______ have _______ dance ________ write___ __ take________ run_________ sit_________ shop________
swim__________
lie________
二.按要求改写句子
1. The boy is playing basketball.
否定句：____________________________
一般疑问句：_________________________
肯定回答：______________________否定回答：______________________ 对“is playing basketball”提问：__________________________
对“The boy”提问：__________________________
2. They are singing in the classroom.
否定句：____________________________
一般疑问句：_________________________
肯定回答：____________________否定回答：______________________ 对“are singing”提问：__________________________
对“in the classroom”提问：__________________________
三. 用现在进行时完成下列句子