—I see you got a "D" in biology．_ ?
—Well, I found that subject hard． I think I'II drop it for history．
| A．How about that | B．What for |
| C．How come | D．What's your next plan |
The girl told her mother that she would give her a call______ her arrival.
| A．upon | B．at | C．with | D．in |
He _____ in a university for five years, but now he runs a company of his own.
| A．has taught | B．had taught | C．taught | D．has been teaching |
The mother rushed to the hospital_____she heard her son was injured in a traffic accident.
| A．in a minute | B．for a moment | C．at the moment | D．the moment |
The well-dressed gentleman______ to be a criminal, which , of course, surprised many readers.
| A．turned to | B．turned out | C．turned down | D．turned up |
A Greek map maker in the 1 century believed that_____ south of the Indian Ocean a contient existed with_____ mild climate.
| A．/ ; a | B．/ ; / | C．the ; a | D．the ; / |