Only after a year ______ to see the results of my work.
—Who did English homework better, Leo or Nick? —Leo is more careful. I think Leo did _____ Nick.
People cut down too many trees, _____ the greenhouse effect becomes more and more serious.
—Who is the baby in this photo? —It’s my sister’s son. The photo _____ by her by e-mail ten days ago.
—Would you please ____ my son from the station for me? —I’ll be glad to.
—Why don’t you use your own knife? —Sorry, I’ve _____ it at home.