It was Feb 8 2014 （Beijing） ___the opening ceremonies of the 2014 Winter Olympics ___ in Russia．
| A．that, broke off |
| B．before, put off |
| C．since, set off |
| D．when, kicked off |
The two animals come from the same family but differ __ body shape and breeding habits.
| A．with | B．from | C．in | D．of |
Please don’t ask me to solve mathematical problems; they are beyond my ____.
| A．guide | B．reform | C．grasp | D．draft |
George always does his best, and that’s ______ I like about him.
| A．who | B．how | C．whether | D．what |
The staff are excited that they have succeeded in what they ____ to do three months ago.
| A．set off | B．set about | C．set out | D．set up |
--- How’s everything going?
--- _______________.
| A．Everything is finished | B．Not so bad, you know |
| C．Everything has been done | D．Not doing wrong, you know |