----- Why was the student laughed at by classmates?
----- He must have _____ what the teacher said in class.
| A．recognized | B．grasped | C．mistaken | D．achieved |
—May I remind you that Mr. White is waiting outside, Mrs. Green?
—Oh, I _________ all about it.
| A．forget | B．had forgotten | C．forgot | D．was forgetting |
Jerry rushed home ____ he heard the news, only ___ that his wife was gone.
| A．as soon as, finding | B．immediately, to find |
| C．the moment, fine | D．when, found |
The computer system ____ suddenly while he was searching for information on the Internet.
| A．broke out | B．broke down | C．broke up | D．broke in |
Then came the disappointing news _____ Brazil was beaten by German in the 2010 World Cup, ______ was bound to cast down the Brazilian fans.
| A．that; what | B．which; which | C．which; what | D．that; which |
American Indians ________ about five percent of the U.S. population .
| A．fill up | B．bring up | C．make up | D．set up |