The manager was worried about the press conference his assistant _____in his place but ,luckily ,everything was going on smoothly.
| A．gave | B．gives | C．was giving | D．had given |
He made another wonderful discovery, ______ of great importance to science.
| A．which I think is | B．which I think it is |
| C．which I think | D．I think which is |
Was it through Mary,_____ was working at a high school, ____ you got to know Tom?
| A．who; who | B．that; which | C．who; that | D．who; which |
Every time Ashtita tries to break a record, he reaches a point ______ he feels he cannot physically do any more.
| A．where | B．that | C．when | D．which |
The boy talked his mother ________ buying him a home computer.
| A．of | B．over | C．to | D．into |
When ______ about the secret of his success, Steven Spielberg said that he owes much of his success and happiness ________ his wife and children.
| A．asking; to | B．asked; in | C．asked; to | D．asked; about |