. Busy as he is, he ________ a few hours a week for physical exercise.
| A．set off | B．set about | C．set aside | D．set away |
Classification is a useful ______ to the organization of knowledge in any field.
| A．means | B．approach | C．mode | D．manner |
He was ______ determined than you, but he turned out to be the first to back out.
| A．no more | B．not more | C．no less | D．not less |
This article was written ______ for China Daily.
| A．extensively | B．exceedingly | C．excessively | D．exclusively |
You should have put the milk into the icebox, I expect it ______ undrinkable.
| A．became | B．had become | C．has become | D．becomes |
This is an ideal site for a university ______ it is far from The downtown area.
| A．provided that | B．now that | C．so that | D．in that |