用括号中所给动词的适当形式填空

1．This time yesterday I ________ ________(read) books.

2．At 9 o'clock last Sunday they ________ ________(have) a party.

3．When I ________(come) into the classroom, she________(read) a storybook.

4．She ________ ________(play) computer games while her mother ________ ________(cook) yesterday afternoon.

5．I ________ ________(have) a shower when you ________(call) me yesterday.