Without umbrellas， the tourists didn't leave the hotel the heavy rain stopped．（ ）
| A． |
if |
B． |
because |
C． |
until |
D． |
whenever |
We are going to have a party ______ the evening of June 30th．（ ）
| A． |
on |
B． |
in |
C． |
at |
D． |
for |
I'm sorry I took your card by mistake，but where is ______？（ ）
| A． |
hers |
B． |
theirs |
C． |
yours |
D． |
mine |
Though Bill is very young，he has a lot of ______ about Chinese history．（ ）
| A． |
information |
B． |
knowledge |
| C． |
background |
D． |
experience |
I'm flying to Shanghai for a holiday next week．
_________．（ ）
| A． |
I′m sorry to hear that |
| B． |
With pleasure |
| C． |
Have a good time |
| D． |
When your mother is leaving |
Do you know ？
We can try to produce less waste， reuse or recycle things．（ ）
| A． |
why can we live a green life |
| B． |
how can we live a green life |
| C． |
why we can live a green life |
| D． |
how we can live a green life |