It remains __________ whether this teaching method will be better than that one.
| A．to see | B．to be seen |
| C．seeing | D．seen |
We are very annoyed ______ his mistake, because we have emphasized this for several times.
| A．at/about | B．with | C．on | D．to |
The environment is getting worse in the present days, so the government must take _______ to stop people _______ too many trees.
| A．methods; to destroy | B．methods; from destroying |
| C．measures; from destroying | D．measures; to destroy |
____ troubles me most right now is____ I can’t remember where I have put my car keys.
| A．That ;what | B．What;that | C．What;what | D．That;that |
What you are saying is not ____ to the question under discussion.Please think twice before you
make any suggestions.
I must go home now, _______ I have many exercises to _______.