_______ is commanded by the King that the new rules ________ out at once.
| A．This, should carry | B．This, be carried | C．It, be carried | D．It, should carry |
The factory used 65 percent of the raw materials,the rest of whichsaved for other purposes.
| A．is | B．are | C．was | D．were |
—Why does the lake smell terrible?
—Because large quantities of water_______________.
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |
One-third of the country____covered with trees and the majority of the citizens_______black people.
A is；are B is；is C.are；are D.are；is
Was it not until you began to work —— how much time you had wasted?
| A．did you realize | B．that you realized | C．did you not realize | D．that you didn’t realize |
After studying mass of data，they drew a conclusion
________China is still a developing country.
| A．that | B．which | C．／ | D．where |