Mr. Smith stood beside the window, his attention ____ the car outside.
| A．focuson | B．focusingupon | C．focusedon | D．beenfocusedon |
. I don’t know ____ that you stay here.
| A．how long it is | B．how long is it | C．it is how long | D．is it how long |
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 littletown of Winchester.
A that B. untilC. sinceD. before
.It was ____ my teacher worked ____ I work hard.
| A．where; that | B．where； where | C．that; that | D．that ;where |