The whole family still live in the house, most of _____ windows face south.
| A．the | B．whose | C．its | D．which |
—Would you please help me to send her the book at your ___?
—Certainly
| A．request |
| B．convenience |
| C．expense |
| D．experience |
He ___ estimated the cost of the product and found that it might cost 10,000dollars or so.
| A．accurately |
| B．roughly |
| C．correctly |
| D．generally |
___ to accept his offer, she politely said that she could manage it by herself.
| A．Willingly |
| B．Willing |
| C．Unwillingly |
| D．Unwilling |
To ___ the puzzlement of the students, the teacher explained it once again to them.
| A．explain |
| B．instruct |
| C．clarify |
| D．classify |
___ the smell of the meat, the dog ran into the room very quickly.
| A．Attracting |
| B．Attracted by |
| C．Arrested by |
| D．Caught by |