His sister left home in 1998, and _______since.
—Doesn’t he feelimpolite when he laughs with his mouth full of food? —I will ask him to pay attention to his behavior.
—I can’t help you with he problem, for Iwith my homework. —Thank you all the same.
By law, doctors are bannedthe kickback(回扣).
Many people worry that air pollution mightchanges in the weather around the world.
He didn’t work hard;he was dismissed by the boss.