_____ many times, she still didn't know how to do it.
| A．She was taught | B．Having taught | C．Having been taught | D．She has taught |
___we can’t understand is ____he didn’t join us in our discussion.
| A．That; why | B．Which; how | C．What; what | D．What; why |
It’s very important for a student to ___ a good state of mind while taking the college entrance examination.
A keep out B keep on C keep upD keep off
----May I have a look at your books?---______
A By this means B By all means C By this way D By any means
It was not what he said but the way ____ he said it that made all the people laugh.
| A．in which | B．which | C．how | D．in that |
As a film star she was a success, but as a wife she was ________ failure, so their
marriage ended in ________ failure.
| A．/; / | B．/; a | C．a; a | D．a; / |