It will be many years ______ the doctors and medical scientists can find _____ for cancer.
| A．since; cures | B．when; treatments |
| C．before; cures | D．until; treaments |
The only drawback of the voyage was the ______ sea, which made me very seasick.
| A．calm | B．rough | C．patient | D．tough |
At the end of the year 2010, some species of birds ddn’t survive the _____ winter in some European countries.
| A．severe | B．serious | C．mild | D．extreme |
—Hi, I hear you’re going to London this summer vacation.
—, I was going to, but now I have changed my plan.
| A．Previously | B．Recently | C．Absolutely | D．Partly |
I was grateful to Anna for being open and giving me the opportunity to explain and ______ the misunderstanding between us.
| A．handle | B．clarify | C．raise | D．develop |
After the meeting was over, the secretary _____ the new workers to the master’s office.
| A．aimed | B．pointed | C．guided | D．imitated |