At times ,worrying is a normal, ________response to a difficult event or situation—a loved one being injured in an accident , for example.
| A．effective | B．individual | C．inevitable | D．unfavorable |
—Something smells really good in here!
—You ______ my Easter cookies．Have one!
| A．smell |
| B．are smelling |
| C．were smelling |
| D．smelt |
—Daddy, how much do you earn an hour?
—If you ______ know, $20 an hour．
A. may B- must
C．can D．should
I ______ for six months．I'm really out of shape．
| A．hadn't exercised |
| B．didn't exercise |
| C．don't exercise |
| D．haven't exercised |
—Could you give me some advice on getting a job?
—First, find out ______ you like doing best．
| A． what | B．which |
| C．how | D．why |
For better sound effects, he was asked to speak ______ the microphone during the whole process．
| A．in | B．for |
| C．into | D．from |