L5L6文法

Mr. Chen ＿＿＿ on the school table tennis team before. (A) is　(B) was　(C) has　(D) have

Judy：Who studied with you in the library one hour ago? Alex：My classmate Kevin ＿＿＿. (A) was　(B) is　(C) does　(D) did

Flora downloaded some songs and movies for her grandmother ＿＿＿. (A) ago (B) now (C) last night (D) next week

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