As we all know,he has regretted wasting the precious time he should have studied hard playing computer games at school．
| A．where | B．that | C．on which | D．when |
—Doesn’t he feelimpolite when he laughs with his mouth full of food?
—I will ask him to pay attention to his behavior.
| A．it | B．that | C．this | D．these |
—I can’t help you with he problem, for Iwith my homework.
—Thank you all the same.
| A．am occupying | B．occupy | C．am occupied | D．was occupied |
By law, doctors are bannedthe kickback(回扣).
| A．to accept | B．to be accepted |
| C．from being accepted | D．from accepting |
Many people worry that air pollution mightchanges in the weather around the world.
| A．add to | B．lead to | C．turn to | D．belong to |
He didn’t work hard;he was dismissed by the boss.
| A．thus | B．instead | C．anyhow | D．however |