Jim says we ______ stay in his house as long as we leave it clean and tidy．（ ）
| A． |
must |
B． |
can |
C． |
need |
D． |
should |
It is hard for the Greek government to get over the present difficulties_________ gets more financial support from the European Union.
| A．if | B．unless |
| C．because | D．since |
------ Our holiday cost a lot of money.
------ Did it? Well, that doesn’t matter ______ you enjoyed yourselves.
| A．as long as | B．unless |
| C．as soon as | D．though |
I was so familiar with her that I recognized her voice ______ I picked up the phone.
| A．the moment | B．after |
| C．before | D．while |
You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.
A. in case C. unless
C. though D. As
I toured the Great Wall，I was deeply impressed with the beautiful scenery．
| A．For the first time | B．At first |
| C．The first time | D．It was the first time |