Employees in a chemical factory should be given _____ training in safety.
| A．ambitious | B．adequate | C．absurd | D．autonomous |
I soon found that the work I was doing ____ by someone else — in other words, I was wasting my time.
| A．had already been done | B．has already been done |
| C．would be done | D．have already been done |
Jim won the award, _______ excited everybody in the class.
| A．which | B．that | C．this | D．it |
The reason ______ he gave for being late was ______ he overslept this morning.
| A．why; that | B．which; that | C．why; because | D．which; because |
In class the teacher’s humorous words often make every student ____ laughter.
| A．burst into | B．break into | C．fall into | D．come into |
Look out! Don’t get too close to the house ______ roof is under repair.
| A．where | B．that | C．whose | D．which |