— “May I speak to your manager Mr. Williams at five o’clock tonight?”
— “I’m sorry. Mr Williams ________ to a conference by then.”
| A．will have gone | B．had gone |
| C．would have gone | D．has gone |
________ from space, the earth , with water_______ seventy percent of the surface , looks like a blue ball.
| A．Seen ; covered | B．Seen ; covering |
| C．seeing ; covering | D．Seeing ; covering |
The news has spread all over the country _____ the spaceship succeeded in returning to the earth.
| A．that | B．which | C．whether | D．what |
— What made her so sad？
— _____ she failed in the examination.
| A．That | B．Because | C．As | D．Since |
Honestly speaking, it is my teacher’s _____ that made me finally take up my present career
as 
a biology researcher.
| A．advantage | B．influence | C．taste | D．guard |
-- Can you persuade him out of the foolish idea?
—_______ no point in doing so—he’ll never change his mind.
| A．It is | B．It has | C．There is | D．There has |