Julia， your mobile phone is ringing．
Wait a minute． It's dangerous ______ it while crossing the street．（ ）
| A． |
answering |
B． |
answer |
C． |
to answer |
﹣﹣﹣Could you please the picture on the wall and make it clean？
﹣﹣﹣Sure．I'd love to．（ ）
| A． |
pull down |
B． |
take away |
C． |
take down |
Cookies are just the thing to serve tall glasses of real lemon juice．（ ）
| A． |
at |
B． |
in |
C． |
with |
The only jokes I tell are the that I hear from you．（ ）
| A． |
one |
B． |
ones |
C． |
joke |
﹣﹣﹣Mary and her classmates are busy preparing for their final examination．
﹣﹣﹣That's why you can always see learning in the library．（ ）
| A． |
them |
B． |
us |
C． |
her |
﹣﹣﹣The dining hall is specially built for ．
﹣﹣﹣That's great! People over seventies won't have to worry about their daily meals．（ ）
| A． |
an old man |
B． |
the old man |
C． |
the old |