谁能帮我解决这些英语选择题..说明理由啊~~谢谢!

1.Children are more able to_____a new situation than abults.
A.adapt to B.change C.devote D.face

KEY A

2.When reading,I often come_____this word.
A.up B.into C.about D.across

KEY D

3.Everyone asked me why Jack didn’t come,but it was_____ mystery to me as to_____A.much of;him B.as much of ;them C.as shch ;him D.the same ;then

KEY B

4.When and where we are going to hold the meeting_____.So we’d better wait until we_____
A.is not announced;are informed
B.isn’t announced;inform
C.are not announced;have been informed
D.aren’t announced;have informed

KEY A

5.-That restaurant is expensive.
-Is it?_____
A.I think you say it is cheap
B.I think you said it was cheap
C.I was thinking you had said it was cheap
D.I thought you said it was cheap

KEY D

6.When she heard the bad news,she_____completely.
A.broke aw

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