17．Last time.he offered to do my homework for me.but I ．( )A．refusedB．refuseC．have refus——青夏教育精英家教网——

17．Last time，he offered to do my homework for me，but I ____________．（　　）

16．The policeman told the children _________ play in the street．（　　）

15．Mom，someone _________．Please pick up the phone．（　　）

not，grassDon't walk on the grass，please．．

visit，last yearWe visited the zoo last year．．

12．Nowadays of business letters are written in English．？（　　）

11．一_________important tool the computer is!
一I think so．（　　）

10．-Have you read the book called Around the world in Eighty Days？
-Who ________ it？（　　）

9．-Excuse me，can I turn right here？
-No，you can't．Please look at the sign _________．（　　）

8．Daming does well in chemistry and maths．（　　）

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