-Why are you so late getting home?
-Our teacher didn’t let us go____ we had finished our homework.
| A．because | B．when | C．if | D．until |
We can have_______ bluer sky if we create________ less polluted world．
| A．a；a | B．a；the | C．the；a | D．the；the |
—Do you know if Cindy wilt drive to Italy this weekend?
—Cindy? Never! She___ driving．
| A．has hated | B．hated | C．will hate | D．hates |
I can________ be a nurse．I’m not a very patient person．
| A．seldom | B．ever | C．never | D．always |
The earthquake which happened in Yushu________ 14th April 2010 was a big disaster．
| A．at | B．on | C．in | D．to |
—Wow! You’we got so many skirts．
—But________ of them are in fashion now．
| A．all | B．both | C．neither | D．none |