Over 80 percent of the population _____ workers.
| A．will be | B．are | C．is | D．was |
It is the ability to do the job ____ matters ,not where you come from or what you are.
| A．one | B．that | C．what | D．it |
It was until dark ___ he found ___ he thought was the correct way to solve the problem.
| A．that; what | B．that; that | C．when; what | D．when; that |
It was in the evening__we reached the little town of Winchester.
A that B. until C. since D. before
It was ____ my teacher worked ____ I work hard.
| A．where; that | B．where； where | C．that; that | D．that ;where |
It is the young man ___ looked for ___ caught the murderer.
A.that; who B.that; they C. they ;that D they ;which