help1.At the Copenhagen conference,all the countries were ca

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help
1.At the Copenhagen conference,all the countries were called on to do all they could to control greenhouse gas emissions__it was too late.
A.when
B.until
C.before
C
2.-Do you mean to play the hero in the play?
-__.But it should be a character I like.
A.Not necessarily
B.Not absolutely
A
3.Many animals sleep a lot when young,but sleep much less when they get older,just__is the case with human being.
A.as
B.what
A
4.The present financial crisis has greatly contributed to thousands of workers__and many factories__.
A.laid off,closing down
B.being laid off,closing down
B
5.-Waiter!How soon can I get my food?I just have half an hour left before my train leaves.
-It__be ready in five minutes.
A.should
B.could
C.may
D.need
A
6.-Are we going sightseeing next week?
-No.The plan__at the second meeting.
A.was cancelled
B.has been cancelled
A

C所有的国家都在呼吁在来不及之前尽自己所能去控制温室气体的排放
A就是没必要只是要一个我喜欢的角色
A时就像的意思到晚年睡觉很少就像人类一样
B上千的工人被解雇并且很多公司倒闭了
Ait should be 这是个固定用法以后还会出现很多次记住就行了
A这个计划在第二次会议中取消了是过去时因此应用过去式
主要考察单词意思和时态高中时这些最重要

help1.At the Copenhagen conference,all the countries were ca All ______will be present at the conference .A.parties conce 请问“On the conference”、“At the conference”、“In the meeting”、“ They were all （）at the ( ) news All __ will be present at the conference.A parties concerned All____will be present at the conference. At that time the two countries were at war and his father wa Because the two countries were at （）war,the people had（）hard all the people present were shocked at the news at the conference call ,in the conference call,on the confer No decision __about the holding of the conference until all No decision _____ about the conference until all the branch