Teenagers are warned to be careful when making friends online, because when you can’t see a person, they could be __________.
| A．everybody | B．somebody | C．anybody | D．nobody |
A new learning center has been built in the school, ______ students to get to know the world more easily．
| A．allow | B．allowed |
| C．to allow | D．allowing |
—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 |