A chair made of steel is stronger, though costs much more, than _____ made of wood.
| A．that | B．one | C．it | D．those |
The Medical Research Council said it could not _____ use of the new drug without further tests.
| A．assist | B．acquire | C．accuse | D．approve |
In an interview, don’t say anything negative about your employer---it gives a bad______.
| A．attitude | B．experience | C．decision | D．impression |
Under the new policy, anyone who is found ______ in the school building will be fined $60.
| A．smoke | B．smoking | C．to smoke | D．smoked |
The Internet is widely used, which ______ the development of English.
| A．speeds up | B．takes over | C．gets across | D．turns to |
Only when she reached her office____ she had left her key at home.
| A．she realizes | B．does she realize | C．she realized | D．did she realize |