I don’t doubt _____ he is a brilliant scientist, but can he teach?
| A．whether | B．if | C．that | D．what |
The house with the ground is valued ____ three thousand yuan, but I bought it ____ only one thousand yuan.
| A．by; with | B．for; at |
| C．with; by | D．at; for |
—Does David often come to school ____ bus?
—Yes, but sometimes he comes ____ his father’s car.
| A．take; in | B．by; by | C．by; in | D．in; with |
Mr. Johnson starts to work very early in the morning and goes on working until late in the afternoon ________a break at midday.
| A．with | B．for | C．as | D．through |
____you have done might do harm____other people.
| A．That;to | B．What;to | C．What;for | D．That;for |
The two ladies are ________ the same age, but there seems to be ten years ________ them.
| A．at, between | B．about, among |
| C．as, among | D．of, between |