—Shall I attend my friend's comingofage ceremony, Mum?
—No, unless you see to ________ that you will be home before 10：00 P．M.
| A．one | B．this | C．it | D．her |
Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale．
| A．man has been | B．man is | C．has man been | D．will be man |
Yesterday I had a word with the CEO of the company, ___ who used to teach at Beijing University．
| A．one | B．the one | C．that | D．it |
In our university there are several big parks ____we students can go to enjoy the beautiful scenery．
| A．to which | B．at which | C．from which | D．in which |
Jenny works hard as usual and it has___．She got the first in the final exam again．
| A．showed off | B．paid off | C．paid back | D．turned up |
No．50 High School is as new as No．48 High School．____, it is more beautiful．
| A．If anything | B．If something | C．If necessary | D．If so |