Keys should never be hidden around the house since thieves _____ know where to look.
| A．virtually | B．variously | C．unavoidably | D．invariably |
---“Charley Oakley, ______ NBA All-star, hasn’t missed ______ game in the past three years.”
---“I can hardly believe it.”
| A．an; the | B．a; the | C．the; a | D．an; a |
The market for ______ used computers is getting larger and larger as______ years go on.
| A．不填, 不填 | B．the, 不填 | C．the, the | D．不填, the |
---“What about ______ school?”
-----“It is as good, as anybody can see, _____ school as No 1 Middle School Attached to Hunan Normal University.”
| A．a; the | B．the; a | C．a; a | D．the; the |
—John has put forward _______ most challenging question for us to answer.
—Yes, it really is. I have never heard _______ harder one.
| A．the; 不填 | B．不填; the | C．the; the | D．a; a |
I often have conversations with John over ______ telephone, while keep in touch with Tom by ______ letter.
| A．不填；the | B．不填；a | C．the；不填 | D．the; a |