Since everyone has come back here,＿＿＿.
| A．on goes our discussion |
| B．goes on our discussion |
| C．on does our discussion go |
| D．does on our discussion go |
I’ve been playing the piano for four hours and I am ________ it.
| A．tired of | B．tired in | C．tired on | D．tired through |
Look, a demonstration ________ on Main Street.
| A．is hold | B．is holding | C．is being held | D．will hold |
What he has done has a bad effect ________ the children.
| A．in | B．on | C．by | D．through |
Zhongguancun was ________ as a special economic zone in the late 1990s.
| A．set in | B．set on | C．set up | D．set about |
The hall ________ joy and happiness.
| A．is filled | B．full of | C．is filled with | D．is full in |