How ______ universe came into being is a puzzle to ______ scientists of all generations.
A. the; 不填 B. an; the C. a; 不填 C. 不填；the
. Although there were so many people in the square, I could ______ my friend.
| A．pick up | B．pick out | C．make up | D．set out |
. Jane is not ____ she was ten years ago. She has changed so much.
| A．that | B．who | C．whom | D．what |
. China as well as the other two super countries _____ sent a man into ____ space.
| A．has; the | B．have;/ | C．has;/ | D．have; the |
. –When and where shall we meet?
-We _______ meet at the station at four this afternoon.
| A．are to | B．are about to | C．are going | D．should |
What do you mean _____ saying “out of question”?
| A．of | B．in | C．by | D．with |