Helen，who fix up the computer in our class？
I think Jeff can．（ ）
A．shouldB．wouldC．mustD．can
There are no buses to the beach. you have a car，it's difficult to get there.（ ）
| A． |
Since |
B． |
After |
C． |
Unless |
D． |
Because |
These beautiful animals are endangered.We must them.（ ）
| A． |
save |
B． |
show |
C． |
stop |
D． |
catch |
Sue works ，so she never seems to make mistakes.（ ）
| A． |
late |
B． |
alone |
C． |
happily |
D． |
carefully |
-What's the terrible noise？
-It's John.He the violin.（ ）
| A． |
practiced |
B． |
is practicing |
| C． |
was practicing |
D． |
has practiced |
Your leg looks really bad!I think you should send for a about that.（ ）
| A． |
pilot |
B． |
doctor |
C． |
singer |
D． |
postman |