19．He returned home very late yesterday. early this morning．( )A．or ratherB．or elseC．rather th——青夏教育精英家教网——

19．He returned home very late yesterday，______ early this morning．（　　）

18．China made a promise to the world in the Copenhagen Summit that by 2020，the carbon-intensity（碳排放强度） of its economy ______ fall 40% to 45%．（　　）

17．To our delight，up till now，the European Union，Japan，and Russia ________ their targets for CO2emissions （排放）．（　　）

16．Listen to the two girls by the window．What language _________？（　　）

	A．	did they speak		B．	were they speaking
	C．	are they speaking		D．	have they been speaking

15．So far，300million yuan _______ been collected for Project Hope，so the majority of children_______ returned to school．（　　）

14．-Are you still going to Shanghai for the Spring Festival？
-Yes，but I really _____ because I have a lot of things to deal with．
A．can't B．mustn't C．won't D．shouldn't（　　）

13．Do some warming up exercise before sports．Or you _______ hurt yourself．（　　）

12．Some amazing people _______ our world for the better in the past 100years．（　　）

11．Mountain climbing _______ be tiring and many people feel sick as the atmosphere gets thinner．（　　）

10．-Do you still remember how we first met？
-Yes，you ________ to my office and ran into me on the way．（　　）

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