The fuel must have been finished, ____ the engine stopped.A．sinceB．asC．becauseD．

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The fuel must have been finished, ____ the engine stopped.

A．since

B．as

C．because

D．for

答案

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略

举一反三

The engineers are going on with their highway project, _____the expenses have risen.

A．even though

B．just because

C．now that

D．as though

题型：不详难度：| 查看答案

I think our boat can pass the treacherous water ______ cautiously handled.

A．until

B．if

C．lest

D．with

题型：不详难度：| 查看答案

______ nobody was very enthusiastic about it, they decided to cancel the trip.

A．See that

B．Seeing that

C．So

D．When

题型：不详难度：| 查看答案

Just as the tree is the unit of a forest and the book the unit of a library, ______ the molecule is the unit of matter.

A．as

B．like

C．so

D．thus

题型：不详难度：| 查看答案

Anyone can borrow books from this library _______ he keeps them clean and returns them in time.

A．even if

B．unless

C．so that

D．as long as

题型：不详难度：| 查看答案