—What do you need now, Mom?
—_______ onion and ______ potato.
| A．A; a | B．A; an |
| C．An, an | D．An; a |
TV at that time?
| A．Did you watch | B．Have you watched |
| C．Were you watching | D．Are you watching |
My mother was cooking while I the radio.
| A．listened to | B．have listened to |
| C．was listening to | D．is listening to |
I can’t findto sit on the crowded bus.
| A．nowhere | B．somewhere | C．anywhere | D．everywhere |
useful invention(发明) the computer is!
| A．What a | B．What an | C．How a | D．How an |
When you aretrouble, why not phone the?
| A．at, police | B．in, policeman | C．in, police | D．at, policeman |