9．Mary to school on foot every morning．( )A．goB．goesC．wentD．will go——青夏教育精英家教网——

9．Mary __________ to school on foot every morning．（　　）

8．__________ of his parents are doctors．（　　）

7．This box is __________ than that one．（　　）

6．Be quick，__________ you'll be late for school．（　　）

5．We will wait until everyone ________ back．（　　）

4．-Where is Gary？
-He _______ in the library．（　　）

3．Lily and Grace are my best friends．________ of them are very smart．（　　）

2．The beach is not as ________ as it used to be．Let's collect the rubbish．（　　）

1．My parents will buy a piano for me if I _____ good grades in the tests．（　　）

20．We often talk in groups and share our ideas with _____．（　　）

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