—The light___________on for long.
—Oh, I am sorry , I will go and turn it off.
| A．has been left | B．has left | C．had been left | D．had left |
Those people were quarreling with each other because the loot (赃物) was not ___ equal shares.
| A．divided from |
| B．divided into |
| C．separated into |
| D．separated from |
—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 |