．We are taught that a business letter should be written in a formal style ____ in a personal one．
| A．less than | B．other than | C．better than | D．rather than |
—Shall I turn the heating on?
—Sure, it's so cold in here. I'm freezing.
| A．rarely | B．naturally | C．merely | D．absolutely |
The No. l subway,at the end of 20l4, will greatly improve the traffic conditions in Qingdao.
| A．opened | B．was opened | C．opens | D．to be opened |
Air pollution is getting more and more serious, so we must take action it is too late.
| A．before | B．after | C．until | D．when |
—Where is the post office?
—It's just over there, at the end of the street. You not miss it.
| A．can | B．must | C．may | D．would |
is known to all is that the Diaoyu Islands have belonged to China since ancient times.
| A．As | B．It | C．What | D．That |