He is good at maths and it won’t be long ____ he works out the problem.A．sinceB．

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He is good at maths and it won’t be long ____ he works out the problem.

A．since

B．until

C．before

D．when

答案

解析

略

举一反三

I think going swimming in my spare time, _____ I think is great fun and good exercise as well as a useful skill.

A．which

B．as

C．that

D．what

题型：不详难度：| 查看答案

. ____ I am concerned, we should be brave and we will reach the top of the hill at last ____ we try our best to climb the hill.

A．So long as; as long as	B．As far as; as longer as
C．So long as; as far as	D．As far as; as long as

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Susan and I can go to the lecture ___.

A．but neither can Charles	B．and so Charies can
C．but Charles can’t	D．and Charles also can

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It’s hard to avoid mistakes. _____ we realize our mistakes and do our best to correct them, that’s all right.

A．As if

B．As long as

C．Even if

D．In order that

题型：不详难度：| 查看答案

_________ I traveled by boat, I got seasick.

A．After

B．Each time

C．The every time

D．Each time when

题型：不详难度：| 查看答案