21. Don’t pour water on his plan. We should encourage him.
| A．hot | B．cool | C．warm | D．Cold |
You have no idea how she finished the relay race __________ her foot wounded so much.
| A．for | B．when |
| C．with | D．while |
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 |