Sam _____ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up | C．picked up | D．set up |
When you introduce me to Mr. Johnson, could you please sayfor me?
| A．everything | B．something | C．anything | D．nothing |
—Is there any other studentwants to visit Wutai Mountain?
| A．Whom | B．who | C．whose | D．which |
—The problem is very difficult. I'm afraid you can't work it out now.
—I fail this time, I will try it again.
| A．Even if | B．Since | C．As if | D．Though |
Richard looked at the envelope andJenny's handwriting immediately.
| A．recognized | B．found | C．realized | D．concerned |
There's a big difference between saying you'll do something anddoing it.
| A．actually | B．frequently | C．gradually | D．certainly |