Can I help you， Madam？
Yes____，please（ ）
| A． |
Two pair of socks |
B． |
Two pairs of socks |
| C． |
Two pairs of sock |
D． |
Two pair of sock |
These aren't ____books．Mary，you left _____at home．（ ）
| A． |
you，your |
B． |
your，yours |
C． |
yours，your |
D． |
your，you |
Now more people are paying attention to protecting the environment．
So we believe ____we will be less pollution in the future．（ ）
| A． |
loudly |
B． |
lovely |
C． |
strongly |
D． |
carefully |
He has much ____as an engineer．So he can build the bridge successfully．（ ）
| A． |
balance |
B． |
experience |
C． |
surface |
D． |
service |
I'd like to go with you，_____I'm too busy．（ ）
| A． |
or |
B． |
and |
C． |
but |
D． |
so |
____a sports fan，my brother is looking forward _____the 2016 Olympic Games in Brazil．（ ）
| A． |
Of；in |
B． |
With；for |
C． |
For；at |
D． |
As；to |