This article says________ is bad for our lungs.
| A．smoke | B．to smoke |
| C．smoked | D．smoking |
The meat smells _______. Throw it away.
| A．well | B．good | C．badly | D．Bad |
—How long has Dashan stayed in China? —He has ____here for several years.
| A．come | B．went | C．been | D．gone |
—____ the afternoon of June 2nd, many foreigners arrived ______ Shanghai.
| A．In; at | B．On; to |
| C．In; in | D．On; in |
Please ________ your cigarette. It’s bad for others on the bus.
| A．put out | B．take out |
| C．hand out | D．hung out |
Which sign means you can’t drop litter?
A． |
B． |
C． |
D． |