–Excuse me, can I smoke here?
--No, ______.
| A．you must | B．you’d not better |
| C．you can | D．you’d better not |
People cut down too many trees, _____ the greenhouse effect becomes more and more serious.
| A．so | B．because | C．although | D．if |
—Who is the baby in this photo?
—It’s my sister’s son. The photo _____ by her by e-mail ten days ago.
| A．sends | B．is sent | C．sent | D．was sent |
—Would you please ____ my son from the station for me?
—I’ll be glad to.
| A．put up | B．make up | C．give up | D．pick up |
—Why don’t you use your own knife?
—Sorry, I’ve _____ it at home.
| A．lost | B．forgotten | C．kept | D．left |
If you don’t go to the meeting tomorrow, ________ ?
| A．he will, too | B．he won’t, either | C．he does, too | D．he doesn’t either |