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
—Why did you start out so early yesterday morning?
—_____ there on time.
A．Got B．Getting C．Get D．To get
