_____ Jack ____ Mike can go to the meeting because one of them must stay in the classroom.
| A．Not only but also | B．Neither nor | C．Both and | D．Either or |
I can solve these problems my own.
| A．by | B．on | C．to | D．of |
There are two workers shouting in the square.
| A．thousands | B．thousand |
| C．thousands of | D．thousand of |
Don’t worry. He is to take care of little Betty.
| A．carefully enough | B．enough carefully |
| C．careful enough | D．enough careful |
Some girls feel if they see a snake.
| A．frighten | B．frightened |
| C．frightening | D．to frighten |
It is difficult for a baby pandain the wild.
| A．to survive | B．survive |
| C．survived | D．surviving |