13．The university estimates that living expenses for international students around $ 8.450 ——青夏教育精英家教网——

13．The university estimates that living expenses for international students ________ around $ 8，450 a year，
which ________ a burden for some of them．（　　）

12．Every day ________ a proverb aloud several times until you have it memorized．（　　）

11．If nothing ________，the oceans will turn into fish deserts．（　　）

10．"What do you want to be？"asked Mrs．Crawford．"Oh，I ________ president，"said the boy，with a smile．（　　）

9．-Hello Jenny，can I see Ms．Lewis？
-__________．I'll tell you're here．（　　）

8．Without his wartime experiences，Hemingway __________ his famous novel A Farewell to Arms．（　　）

	A．	Didn't write		B．	hadn't written
	C．	wouldn't write		D．	wouldn't have written

7．-I can drive you home．
-__________，but are you sure it's not too much trouble？（　　）

	A．	That would be great		B．	Don't bother
	C．	I'm afraid not		D．	Take care

6．If I __________ it with my own eyes，I wouldn't have believed it．（　　）

5．If __________ for the job，you'll be informed soon．（　　）

4．-Can't you stay a little longer？
-It's getting late．I really __________ go now，My daughter is home alone．（　　）

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