Our Chinese teacher didn't go to bed______ he finished his work last night．（ ）
| A． |
if |
B． |
until |
C． |
since |
D． |
because |
Could I ask you some questions？
Yes，you ．（ ）
| A． |
can |
B． |
could |
C． |
must |
she is only seven，she can cook dinner．（ ）
| A． |
But |
B． |
So |
C． |
Though |
English is as as math．（ ）
| A． |
important |
| B． |
more important |
| C． |
the most important |
Jim's birthday is January．（ ）
| A． |
on |
B． |
in |
C． |
at |
They plan to plant trees next year．（ ）
| A． |
three hundred |
| B． |
three hundreds |
| C． |
three hundreds of |