China is still in a war(战争) against COVID-19. Lots of people _________ their best to keep our country safe.
A.is doing | B.are doing | C.were doing |
更新时间:2022-01-03 21:00:40
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【推荐1】Kate ________ now; the others ________.
A.sing; listen | B.is singing; is listening | C.sing; are listening | D.is singing; are listening |
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【推荐2】—Where is Jack?
— In the sitting room. He _______ TV with his brother.
— In the sitting room. He _______ TV with his brother.
A.watch | B.watched |
C.is watching | D.was watching |
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