He took the machine to pieces to find out how it .
| A．progressed | B．operated | C．equipped | D．managed |
A survey was carried out on the sleep time of students in middle schools, ______ were surprising.
| A．its results | B．whose result | C．the results of which | D．of which results |
---Do you have ______ for the party, Mary?
---No, we still have to get another five chairs and some fresh flowers.
| A．something | B．everything | C．anything | D．nothing |
Was it in 1969______ the American astronaut succeeded ______ landing on the moon?
| A．when; on | B．that; on | C．when; in | D．that; in |
---What do you remember Alexander Graham Bell as?
--- ______ inventor of ______ telephone.
| A．an; / | B．the; a | C．the; the | D．/; the |
---I hear that Mary won the prize of the biology contest.
---______ She was not interested in it at all.
| A．You’re kidding! | B．So what? | C．Why not? | D．Not really |