It rained for two weeks, completely ________ our holiday.
| A．ruined | B．ruin | C．to ruin | D．ruining |
Many studentspreparing for the midterm examination.
| A．are engaging in | B．are engaging themselves |
| C．are engaging themselves | D．are engaged in |
________ 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 |
— 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 |