20xx秋廣東版開心學英語六上unit4keepingclean練習題1(存儲版)
【正文】 re ____________ some tall buildings now. 3. I _____________ listening to music now. 4. They ___________ not at school yesterday. 5. There ___________ some milk in the glass now. 五． 給問句選出正確的答語。 ( )1. London is a big city ___________ dirty air. A. on B. for C. with ( )2. It ________ dirty before, but it _________ clean now.\
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