Sally worked late in the evening to finish her report ________ her boss could read it first next morning.

　　A．so that

　　B．because

　　C．before

　　D．or else

________, I have never seen anyone who’s as capable as John.

　　A．As long as I have traveled

　　B．Now that I have traveled too much

　　C．Much as I have traveled

　　D．As I have traveled too much

—Can I drive on the free way, Mr. Green?

—You can when you ________ a bit more skilled.

A．will get

B . are getting

C．will have got

D．get

Good ways of doing things mean saving time, and ________ it is important for us to find them.

　　A．still

　　B．however

　　C．therefore

　　D．otherwise

—Could you take a message for Mr. Green?

—Certainly. I ________ him about something else in any case, so it ________ any bother.

　　A．may see; isn’t

　　B．see; won’t be

　　C．will see; is

　　D．will be seeing; won’t be

Some people object to the research on cloning（克隆）human embryo（胚胎）， ________ its purpose is.

　　A．whatever

　　B．what

　　C．which

　　D．whoever

By the time you get to the airport, she ________ for New Zealand.

　　A．would be leaving

　　B．has already left

　　C．is leaving

　　D．will have left

Food shortage will long be a world problem ________ much has been done to supply enough for everyone.

　　A．no matter

　　B．since

　　C．before

　　D．although

—What was the party like?

—Wonderful. It’s years ________ I enjoyed myself so much.

　　A．before

　　B．when

　　C．since

　　D．after

________ you want me to fire you, I suggest you stop wearing sport clothes at office.

　　A．Unless

　　B．If

　　C．Since

　　D．Until