---What’s your impression of the Great Wall?
---Wonderful! Once ____ , it can never be forgotten.
| A．seen | B．seeing | C．being seen | D．saw |
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．before | D．unless |
My friend Mary is _________beautiful girl, _________girl everyone likes to work with.
| A．a , a | B．a , the | C．the, a | D． the , the |
Believe it or not, that is _______ we have dreamt about for twelve years.
| A．when | B．which | C．why | D．what |
You haven’t answered my question _______ I can join in the game tonight.
| A．if | B．whether | C．which | D．that |
From the top of Mount Tai, you can get a wonderful _______ of sunrise.
| A．scenery | B．sightseeing | C．view | D．scene |