_________several times, but Mary still has no idea of how to do it properly.
| A．Being shown | B．Having shown | C．Having been shown | D．I’ve shown her |
We don’t know the reason _____ he didn’t accept the job.
| A．for what | B．for that | C．for which | D．for why |
. There are altogether eleven books on the shelf, _____ five are mine.
A. on which B. in which C. of which C. from which
Great changes have taken place in that school. It is no longer_____ it was 20 years ago,______ it was so poorly
equipped.
| A．what ; when | B．that; which | C．what; which | D．when, that |
I don’t like _____ you speak to her.
| A．the way | B．the way in that | C．the way which | D．the way of which |
Rather than _______everything to the last minute, I always prefer starting early.
| A．to leave | B．leave | C．leaving | D．left |