__ many times, but she still didn"t know how to do it.A．She was taughtB．Having t

题型：不详难度：来源：

__ many times, but she still didn"t know how to do it.

A．She was taught

B．Having taught

C．Having been taught

D．She has taught

答案

解析

因为有but连接所以前后两个必须是完整的句子。

举一反三

--I"m going to the post office.
--_______you"re there, can you get me some postcards?

A．As　

B．While　

C．Because

D．If

题型：不详难度：| 查看答案

_______ I admit that there are still some problems about the traffic in this area, I don"t mean that it can"t be solved.

A．While

B．Until

C．Unless

D．As

题型：不详难度：| 查看答案

They kept trying _________ they must have known it was hopeless.

A．if

B．because

C．when

D．where

题型：不详难度：| 查看答案

The doctor would allow him to go home _____ he remained in bed.

A．as though	B．for fear that
C．on condition that	D．as far as

题型：不详难度：| 查看答案

I will go to the science palace to morrow _____it doesn’t rain heavily.

A．as if

B．in case

C．even if

D．so long as

题型：不详难度：| 查看答案