Is this the research center _____you visited the lab last year ?
| A． which | B． the one | C．that | D．where |
There is a board by the road, which _____ “Parking_____!”
| A．writes, forbidding | B．reading, forbidding |
| C．says, forbidden | D．saying, forbidden |
In order to produce more grain, it________that the area of farmland_____.
| A．is demanded, being increased | B．has been demanded, be increased |
| C．demand, should be increased | D．demands, should increase |
---Do you like the new pen?
---Yes, it_____ smoothly.
| A．is written | B．is writing | C．writes | D．wrote |
.The Red Army ____ more than 25,000 li and arrived at North Shanxi at last.
| A．walked | B．ran | C．covered | D．travel |
News reports say peace talks between the two countries _____ with no agreement reached.
| A．have broken down | B．have broke out |
| C．have broke in | D．have broke up |