You must ______ your cigarette when you are at the gas station.
| A．put down | B．put on | C．put off | D．put out |
—Do you love reading Guo Jingming’s novels?
—Of course I do，but Ithem for a long time because I'm always busy．
| A．didn't read | B．haven't read |
| C．hadn't read | D．don't read |
Some peoplefeel sick when they read a book in a car or on a boat．
| A．must | B．should |
| C．may | D．need |
US peoplelike to have a barbecue in a park，a lake or in their backyards．
| A．beside | B．below |
| C．in | D．over |
We should learn from ourso that we won't repeat them．
| A．experiences | B．experiments |
| C．mistakes | D．opportunities |
—How can I make full use of my time?
—Makea clear timetable first．
| A．you | B．your |
| C．yours | D．yourself |