15．-Did you know ( ) yesterday?-No.I didn't know the reason．A．how he arrivedB．what he didC．where he ——青夏教育精英家教网——

15．-Did you know （　　） yesterday？
-No，I didn't know the reason．

14．-Why are the class so quiet？
-Oh，the students （　　）

	A．	take an exam		B．	took an exam
	C．	are taking an exam		D．	have taken an exam

13．You （　　）tell others about this-it's a secret．

12．I'd like to help you if you （　　） your problems．

11．-Did you see a boy pass by ten minutes ago？
-No，sir．I （　　） with my mobile phone．

10．Great changes （　　）in Handan in the past few years．

	A．	take place		B．	took place
	C．	have taken place		D．	will take place

9．-Why is it so noisy there？
-The boys are talking about the football match （　　）

8．The more careful you are，the （　　） mistakes you will make．

7．The apple on the table is much bigger than（　　） on the floor．

6．express，your opinions，you，free，can
Can you express your opinions freely？

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