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____________________________________________________________________________________三、單項(xiàng)填空 ( )1. A library with five thousand books ________ to the nation as a gift. A. is offered B. has offered C. are offered D. have offered He found it interesting that so many products were made in China. A ( )2. —How clean your car is! —Thank you. It ________ very often. A. is washed B. washes C. was washed D. washed ( )3. A lot of trees ________ around here every year and we can enjoy fresher air now. A. plant B. is planted C. were planted D. are planted A D ( )4. He i