Nanjing Zijinshan Insect Museum， which will be open to the public soon， was formed at the foot of Zhongshan April 2nd．（ ）
A．inB．onC．atD．from
Dad，____ can we reach Huangguoshu Waterfall？
In about an hour．（ ）
| A． |
how long |
B． |
how soon |
C． |
how often |
D． |
how far |
Paper ____ first ____ about two thousand years ago in China by Cai Lun．（ ）
A．is； inventingB．is； invented
C．has； inventedD．was； invented
____ 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 |