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t progress since last year. 10. He has started to bee fat since he (stop) taking exercise. Ⅲ . 單項(xiàng)選擇 ( ) 1. — How long did you stay with your friend John in the cafe last night? — 10:30 . A. At B. Since C. Until D. Whenever ( ) 2. — Did you talk with your favourite singer after the concert? — No. He got on the coach I could get in a word. A. while B. after C. until D. before ( ) 3. While I along the street, a running boy into me from behind. A. was walking。 1415 牛津九上 Unit4 語法小練 Ⅰ . 根據(jù)句子意思,選用 before, when, while, since 或 until 填空。 1. I was about to take a