David， ______you please sweep the floor and take out the trash？（ ）
| A． |
Could |
B． |
may |
C． |
might |
D． |
must |
Today is September 10th．It's Day，let's say"Thank you"to our teachers．（ ）
| A． |
Teacher's |
B． |
the Teachers' |
| C． |
Teachers |
D． |
Teachers' |
I think Readers（《朗读者》）is educational TV program．（ ）
| A． |
a |
B． |
an |
C． |
the |
Our science teacher said that light much faster than sound．（ ）
| A． |
traveled |
B． |
travels |
C． |
travel |
You should come by eleven o'clock you want good seats．（ ）
| A． |
if |
B． |
whether |
C． |
when |
Daming wants to be a policeman when he up．（ ）
| A． |
has grown |
B． |
grew |
C． |
grows |