I had walked a few steps _______ I realized that I was lost in the thick fog.A．

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I had walked a few steps _______ I realized that I was lost in the thick fog.

A．unless

B．Before

C．When

D．since

答案

解析

before表示“还没……就……”

举一反三

________ the plan has been made, let’s get down to ________ it out.

A．Now that; carry	B．Because; carry
C．Since; carrying	D．Now; putting

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It knowledge is power, Sir Francis Bacon wrote in 1579, perhaps creativity ca be described as the ability to use that power.

A．what; and	B．as; then
C．which; and	D．that; then

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The news is spreading around the airport is a heavy storm is coming.

A．what; /

B．that; that

C．/; that

D．that; which

题型：不详难度：| 查看答案

.A computer is so useful a machine ________ we can use everywhere.

A．that

B．which

C．as

D．what

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Mother made a promise ____ I passed the college entrance examination she would buy me a mobile phone.

A．that

B．if that

C．that if

D．that whether

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