﹣Tom， do you know____？
﹣In Beijing．（ ）
A．where will the 24th Winter Olympics be held
B．where the 24th Winter Olympics will hold
C．where the 24th Winter Olympics will be held
D．where will the 24th Winter Olympics hold
The water dark and dirty．It's no longer safe to drink．（ ）
| A． |
became |
B． |
has become |
| C． |
will become |
D． |
was becoming |
Last night，the shop was closed she didn't buy any chocolate．（ ）
| A． |
so |
B． |
if |
C． |
or |
D． |
when |
Some old people need a _______ because they feel lonely．（ ）
| A． |
gift |
B． |
stick |
C． |
pet |
D． |
watch |
By the time the teacher came, we ______ cleaning the classroom．（ ）
| A． |
finished |
| B． |
have finished |
| C． |
had finished |
_____ walk on the grass．（ ）
| A． |
Doesn't |
B． |
Don't |
C． |
Not |