After retirement, she _____ herself in _______the poor children.
| A．occupied, helping | B．occupied, to help |
| C．devoted, to help | D．devoted, helping |
The police have ____ power to deal with such matters by ____ law.
| A．the; the | B．不填；不填 |
| C．不填；the | D．the；不填 |
That she hadn’t kept her ____ on her work resulted in the failure.
| A．head | B．heart | C．brain | D．mind |
The little girl couldn’t work the problem out. She wasn’t ____ clever.
| A．that | B．much | C．enough | D．too |
Listen! His family must be quarrelling, ____?
| A．mustn’t it | B．isn’t it |
| C．aren’t they | D．needn’t they |
The engineers made two big plans for the dam, ____ was never put in force.
| A．one of them | B．which |
| C．one of which | D．every one of which |