The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
Global warming causes the ocean ________, which in turn speeds ice melting. A. to warm B. warming warmed D. warm
— I’m leaving now. — ________ sure you turn off the switch. A. To make B. Make Made D. Making
We have a fine of the lake from our hotel window.A. scene B. sight view D. scenery
It’s well-known that ________ World Exposition in 2010 is quite ________success.A. 不填; a B. The; a The; 不填 D. 不填; the
—We’ve missed the train! —________, there will be another in ten minutes. A. I’m sorry B. Excuse me I beg your pardon D. Never mind