30．It is reported that there will be a heavy rain tomorrow; _____ the hike would be put off．
| A．in any case | B．in which case | C．in this case | D．in no case |
A lot of people don’t learn from their mistakes ______ they get hurt.
| A．whether | B．when | C．if | D．unless |
The Russian Railway has _______ the prices of tickets for long-distance trains.
| A．cut down | B．broken down | C．turned down | D．set down |
The winner of the race is tall and thin; he _______ be my friend, Mike, who is short and fat.
| A．might | B．mustn’t | C．can’t | D．should |
To learn how their children are doing at school, parents need to _______ the teachers every now and then.
| A．admire | B．combine | C．gather | D．consult |
—Tom, must you have the light ______ all night? It’s really a waste.—Sorry, I won’t do it again.
| A．burned | B．burning | C．to burn | D．to be burned |