★★练一练★★
 
　　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.
 
　　答案：1. was reading 2. were having 3. came; was reading  4. was playing; was cooking 5. was having; called

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