The problem is so complex that I'm afraid it will take me several hours to________．
| A．put out | B．set out |
| C．break out | D．figure out |
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 |
The education of ______ young is always ______ hot and serious topic.
| A．不填, 不填 | B．the, a |
| C．不填, the | D．the, 不填 |