He is the tallest of all________.
| A．his classmates | B．his friends | C．his students | D．the students |
— Did you happen to see _______ black and _______ white cat?
— Are they missing? I told you to take care of them.
| A．a; 不填 | B．the; 不填 | C．the; the | D．a; the |
In the market, vegetables are sold by _______ kilogram, I mean, by _______ weight.
| A．the; 不填 | B．不填; 不填 | C．the; the | D．不填；the |
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 |