— How long have you been here？— ______ the end of last month，A．InB．ByC．AtD．Sinc

题型：不详难度：来源：

— How long have you been here？
— ______ the end of last month，

A．In

B．By

C．At

D．Since

答案

解析

since引导的介词短语和现在完成时连用

举一反三

The government has taken some measures to solve the shortage of electricity, but it may be some time _______ the situation improves.

A．since

B．when

C．unless

D．before

题型：不详难度：| 查看答案

Doctor Brown says that _______ what forceful arguments against cigarette harm there are, many people insist on smoking.

A．though

B．however

C．no matter

D．even if

题型：不详难度：| 查看答案

We must take measures to protect endangered wildlife _______ it is too late.

A．now that

B．as long as

C．unless

D．before

题型：不详难度：| 查看答案

Jack said that he was sure of succeeding in passing the Totel Examination this time, _______, in my opinion, I don’t think so.

A．what

B．which

C．but

D．therefore

题型：不详难度：| 查看答案

— What should I wear to attend his wedding party?
— Dress _______ you like.

A．what

B．however

C．whatever

D．how

题型：不详难度：| 查看答案