____ is known to everybody, the moon travels round the earth once every month.
| A．It |
| B．As |
| C．That |
| D．What |
The weather was __________ cold that I didn't like to leave my room.
| A．really | B．such |
| C．too | D．so |
The air is deadly polluted because some factories don't __________ the rules to protect the environment.
| A．appreciate | B．regard |
| C．honor | D．respect |
John received an invitation to dinner, and with his work __________, he gladly accepted it.
| A．finished | B．finishing |
| C．having finished | D．was finished |
Mike went to play football with most of his homework __________.
| A．finishing | B．have finished |
| C．finished | D．was finished |
Now that we've discussed our problem, are people happy with the decisions __________?
| A．taking | B．take |
| C．taken | D．to take |