It's necessary____ masks（口罩） in public places during the COVID﹣19 period．（ ）
| A． |
for us to wear |
B． |
for us wearing |
| C． |
of us wearing |
D． |
of us to wear |
____ noise pollution， and we can live in a quiet environment．（ ）
| A． |
Prevent |
B． |
Preventing |
C． |
Prevented |
D． |
To prevent |
Your new watch is so nice! When did you buy it？
In October． I ____ it for two months．（ ）
| A． |
had |
B． |
bought |
| C． |
have had |
D． |
have bought |
Linda has ____ to Paris． How can I get in touch with her？
Don't worry． She will call you as soon as she ____ there．（ ）
| A． |
been；will get |
B． |
been；gets |
| C． |
gone；will get |
D． |
gone；gets |
I like the TV program The Reader best． I think we should spend as much time as we can ____ in our spare time．（ ）
| A． |
read |
B． |
to read |
C． |
reading |
D． |
reads |
Success always belongs to those ____ have tried their best to make their dreams come true．（ ）
| A． |
who |
B． |
whom |
C． |
whose |
D． |
which |