Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
| A．it, it | B．what, what |
| C．it, what | D．what, it |
The plan____no improvement, that is to say, it can't be improved any more.
| A．admits of |
| B．admits for |
| C．allows for |
| D．asks for |
It was not an easy decision for her to make as it would affect her future study in college and her future job____．
| A．though |
| B．as well |
| C．either |
| D．also |
Because paper is very expensive, we must ____ it with other things.
| A．replace |
| B．abandon |
| C．remove |
| D．exchange |
The parents have the ____ to teach their children to follow all school rules.
| A．ability |
| B．responsibility |
| C．chance |
| D．possibility |
We're going to be meeting there on a regular ____.
| A．basis |
| B．fact |
| C．bottom |
| D．reason |