--- Frank, are your parents strict with you?
--- Yes, they always make me _______ my homework before I go out.
A. to finishing B. finish C. finishing
About _____ of the workers in my company ______ to work every day．
| A．two-nineths; drives | B．two-nineths; drive |
| C．two-ninths; drives | D．two-ninths; drive |
Generally speaking, there _______ be any survivors(幸存者) after such a long time. However, two young people were found _______. Life is super-nature!
| A．mustn’t; living | B．can’t; dying |
| C．may; dead | D．can’t; alive |
LastmonthItraveledacrosstheSaharaDesertby______camelwithsomelocals.
What________amazingexperience!
| A．the;an | B．a;/ | C．/;the | D．/;an |
The light bulb ______ by Edison in the middle of the 1780s.
| A．is invented | B．was invented | C．invented | D．invent |
The old scientist has made a great contribution the moon.
| A．in explore | B．to explore | C．explore | D．to exploring |