He is very old,____ he still works very hard. A．butB．ifC．whenD．as

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He is very old,____ he still works very hard.

A．but

B．if

C．when

D．as

答案

解析

略

举一反三

____ you are dismissed.

A．Neither you go nor	B．Either you go or
C．Whether you go or	D．Both you go and

题型：不详难度：| 查看答案

They had camped once before, ____ they knew what to take.

A．because

B．now

C．so

D．since

题型：不详难度：| 查看答案

Why these things happened was ____ the driver had been careless.

A．because of

B．owing to

C．due to

D．that

题型：不详难度：| 查看答案

___we have satisfied you, you have no grounds of complaint.

A．So

B．Since that

C．Now that

D．By now.

题型：不详难度：| 查看答案

Write clearly ____ your teacher can understand .you correctly.

A．since

B．for

C．because

D．so that

题型：不详难度：| 查看答案