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re was no answer. — Oh, I’ m sorry. Maybe I ______________ dinner at my friend’ s home. A. had B. having C. was having D. have had ( ) 10. The little girl kept __________ the house, because she wanted to keep it _________. A. cleaning。 ( ) 1. When I walk past his room, I heard him ____________. A. was singing B. singing C. sang D. is singing ( ) 2. — Did you go to the flower show in the City Square? — No, I ____________ how to make food then. A. learn B. learned C. was learning D. am learning ( ) 3. — Where was your brother at this time last night? — He was writing an ____________ I was watching TV at home. A. as soon as B. after C. until D. while ( ) 4. — How did the accident ha