—Could you tell me ______?
—Usually one hour and a half.
| A．how long it takes to fly to Shanghai |
| B．how long it took to fly to Shanghai |
| C．how long does it take to fly to Shanghai |
| D．how long did it take to fly to Shanghai |
Bob swims _______ than I， but he doesn’t swim my brother.
| A．much well， as well as | B．better， as good as |
| C．better， so well as | D．better， so good as |
I find this Math problem very ___ _. I believe the students can work it out .
| A．easily； easy | B．easy； easily |
| C．easily； easily | D．easy； easy |
The number of students in our school _______ 4，000 and a number of them ______ good at playing Ping-Pong.
| A．is； is | B．are； are | C．is； are | D．are； is |
You must be tired now. Why not ___________ a rest .
| A．to stop to have | B．to stop having |
| C．stop having | D．stop to have |
___________ you are， ____________ mistakes you’ll make.
| A．The more careful， the fewer | B．More careful， the less |
| C．The more careful， the less | D．More careless， fewer |