【题目】He ______ playing the piano when he was very young.

【题目】All the children ________ at the aquarium(水馆) that day．

【题目】—It’s time _____ supper. —OK, Let’s _____ .

【题目】Pop is such an important part of society ______ it has even influenced our language.

【题目】(2013河南)—What ________ the noise，Bill？

【题目】—______ does your mother ________ to the park? —By bus.

【题目】My brother saw a wallet _______ on the road and turned it to the policeman.

【题目】—How was your trip to Hang Zhou？

【题目】His father _____ to Nanjing. He _____ back next week.

【题目】Are you ________ in these ________ storybooks？