Scientists ____ thousands of chemicals before they decided on the right one in the end.
| A．tried out | B．found out | C．worked out | D．turned out |
—Do you still remember the accident ?
—Yes. Actually, I have experienced nothing more .
| A．frighten | B．to be frightening |
| C．frightened | D．frightening |
The teacher went up to the sleeping student and patted him on the head, _______.
| A．waking him up | B．to wake him away |
| C．woke him up | D．waken him away |
________ a mobile phone can you ring ______ you want to talk with anyway.
| A．Using; whoever | B．Only on; whomever |
| C．By; whatever | D．With; anyone |
Pop music is such an important part of society______ it has even influenced our language.
| A．as | B．that | C．which | D．where |
What he has told us about the situation in Iraq simply doesn’t make any________.
| A．use | B．reason | C．value | D．sense |