17．David couldn't tell from far away whether the green traffic light meant goingstraight or tu——青夏教育精英家教网——

17．David couldn't tell ______from far away whether the green traffic light meant going
straight or turning left．（　　）

16．______your timely help，the three children would not have survived the terrible
accident．（　　）

15．On August 7，2009 Typhoon Morakot swept across Taiwan，______ a lot of villages damaged．（　　）

14．It's very kind of you to do the washing-up，but you _____it．（　　）

	A．	didn't need to do		B．	don't need to do
	C．	needn't have done		D．	needn't do

13．The news came as no surprise to me．I ______ for some time that the factory was going to shut down．（　　）

12．The police needed more evidence they could draw a conclusion．（　　）

11．When I lived in Canada，I _____ fish in a pond nearby on Sundays．（　　）

10．-These days the air has been heavy with PM 2.5，and it's hard to see．
-Yes，but sometimes it ______ also be clear，especially after a rain．（　　）

9．I'm sorry，____I won't be able to come tonight．（　　）

8．---Shall we stop to have a short rest？I'm feeling a little tired．
---We'd better hurry to get out of this zone it is getting late．（　　）

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