It's time______class． Lets go into the classroom．
OK．（ ）
| A． |
for |
B． |
of |
C． |
in |
You take me to the station．My brother's taking me．（ ）
| A． |
can't |
B． |
mustn't |
| C． |
shouldn't |
D． |
don't have to |
May I speak to Mrs．Black？
Sorry，mum can't come to the phone now．She a shower．（ ）
| A． |
has |
B． |
had |
C． |
is having |
D． |
was having |
I didn't do very well in this exam．Unluckily，he did it ．（ ）
| A． |
worse |
B． |
badly |
C． |
better |
D． |
worst |
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 |