Los Angeles Times reported that researchers may have found a way to _________ human life by changing certain genes, so that humans might expect to live twice as long.
| A．extend | B．preserve |
| C．multiply | D．transform |
You’d better make my room ＿clean and tidy while I’m away.
Ａ．look B. to look C. looking D. looked
It’s always difficult being in a foreign country, ___________if you can’t speak the language.
| A．extremely | B．naturally | C．basically | D．especially |
----Do you mind if I turn on the radio?
| A．You’re welcome | B．Excuse me |
| C．How can you do that? | D．I ’m sorry, but I do |
He was so nervous during the test. No ________he didn’t pass the exam.
| A．way | B．surprise | C．wonder | D．matter |
I don’t mind picking up your things from the store. ______, the walk will do me good.
| A．Sooner or later | B．Still | C．In time | D．Besides |