China's reform and opening has been going on for ________ is like about 30 years now and it's really quite remarkable.
| A．that | B．which | C．what | D．it |
I can’t remember ________ made the teacher give Mary the permission to leave the class earlier.
| A．that it was what | B．what it was that | C．what was it that | D．that was it what |
In no time ________ smoke coming out of the house.
| A．did we see | B．we saw | C．are we seeing | D．we see |
________ got on the train when it started to move.
| A．Scarcely I had | B．Scarcely had I | C．No sooner I had | D．No sooner had I |
---Would you mind giving your advice on how to improve our business management?
---If you make ______ most of the equipment, there will be ______ rise in production．
| A．/; / | B．the; a | C．/；a | D．the; / |
The number of students in our schoolabout 3,000 andthem are from the countryside.
| A．is; a large deal of | B．are; a number of |
| C．are; large deal of | D．is; a large number of |