_________ you are, __________ mistakes you’ll make.
| A．The less careful; the less | B．The less careful; more |
| C．The more careful; the fewer | D．The more careful; the more |
The boy failed four times, but he said he would try ___________.
| A．a five time | B．a fifth time | C．the five time | D．the fifth time |
Recently there have been many occasions____ you have attended events on your own.
| A．where | B．which | C．when | D．why |
My brother likes eating very much but he isn't very _____ about the food he eats.
| A．special | B．peculiar | C．particular | D．unusual |
Scientists are convinced the positive effect of laughter physical and mental health.
| A．of; at | B．by; in | C．of; on | D．on; at |
Prices of daily goods ________through a computer can be lower than store prices．
| A．are bought | B．bought | C．been bought | D．buying |