第62页

信息发布者：
came
was sweeping
was washing
was cooking
was cleaning
was cleaning
Grandpa was reading the newspaper while Grandma 
was making breakfast.
As Aunt Pauline was talking about her ideas, they 
were listening carefully.
The boys were having a drink while others were 
cooking the food.
The bus arrived as the children were waiting at the 
bus stop.
When Mr Wang came home, Mrs Wang was 
watching TV.
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