He left school and began work ______ twelve．（ ）
| A． |
at the age of |
B． |
at the beginning of |
| C． |
at the top of |
D． |
at the bottom of |
is it from your home to school？
It's about two kilometers． （ ）
A．How longB．How farC．How soonD．How often
"Food Safety" has become one of the hottest topics recently．
Yeah， it receives ______ Internet hits a day． （ ）
A．thousandsB．thousands of
C．thousandD．hundreds
Shall we go to amusement park right away or the day after tomorrow？
______． Any time will do． （ ）
A．Excuse meB．Have a good time
C．It's up to youD．I'm afraid I can't
Why do you ______ Liu Hulan？
Because she is a great hero． （ ）
A．look likeB．look downC．look overD．look up to
A good friend is someone you ______ share your pleasure and pain with． （ ）
A．canB．needC．shouldD．must