One of the good things about the use of noise-killing system is _________ it saves the need for a silencer.
| A．whether | B．that | C．how | D．why |
-- Jim has his wife do all the housework! Isn’t he wise?
-- Not really. He is_____.
| A．more wise than lazy | B．wiser than lazy |
| C．more lazy than wise | D．lazier than wise |
He reminded his daughter that only after _____ a secretary and other staff _____ able to concentrate on marketing.
| A．she could afford; would she be | B．she could afford; she would be |
| C．could she afford; would she be | D．could she afford; she would be |
–Would you like another sandwich?
--Another sandwich? I _____ my first one yet.
| A．haven’t had | B．hadn’t had | C．didn’t have | D．don’t have |
Many experts hold the view _____ teacher development is ____ the key to better education lies.
| A．which; where | B．which; in which | C．that; where | D．that; in which |
_____ that he has no qualifications in business management, Ken plans to gain the necessary skills by taking a part-time course.
| A．Concerning | B．Concerned | C．Being concerned | D．To concern |