As we all know(众所周知), the dinosaur has _____.
|
A．died |
B．died out |
C．died from |
D．died of |
As the spring comes, the flowers began to _____.
|
A．come out |
B．come in |
C．come on |
D．come down |
Scientists say they are beginning to _____ in the fight against cancer.
|
A．break in |
B．break out |
C．break down |
D．break through |
Sandra was a student ____ the age of 21.
|
A．at |
B．in |
C．on |
D．for |
The conference has been held to discuss the effect of tourism(旅游业) ___ the wildlife in the area.
|
A．in |
B．on |
C．at |
D．with |
I couldn’t ____. The line was busy.
|
A．go by |
B．go ground |
C．get in |
D．get through |
