A number of students trees every year and the number of them increasing.
| A．plant; is | B．plants; is |
| C．planting; is | D．planting; are |
Two thirds of the work ______done by Jimmy, and ______was done by Nancy.
| A．was; the rest | B．was; the others |
| C．were; the others | D．were; the rest |
Some experts believe it is the grandparents who ________ for the spoiled child.
| A．are to blame | B．are to be blamed |
| C．should blame | D．are blamed |
More than one doctor _____ involved in the rescue that took place after the earthquake．
| A．was | B．is | C．were | D．are |
A number of students _____ absent today, the number of whom ________five.
| A．is, is | B．are, are |
| C．is , are | D．are , is |
Even more widespread _______ the copying of music and the pirating of software, especially with the development of new computer programs.
| A．is | B．does | C．are | D．do |
Listening to loud music at rock concerts _________ caused hearing loss in some teenagers.
| A．is | B．are | C．has | D．Was |
The head teacher insisted that every minute ______ made full use of ______ for the mid-exam.
| A．be; to prepare | B．was; preparing |
| C．be; preparing | D．was; to prepare |
Jackson as well as his classmates going to learn Shakespeare’s works next week, of which some hard to understand.
| A．are; is | B．are; are | C．is; is | D．is; are |
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 |
A number of books in the library _______ been stolen so that the number of them ______smaller than before.
| A．have; is | B．has; is | C．has; are | D．have; are |
On this day 232 years ago, the states _______ still arguing about what the new country should be called. Today, however, the United States _______ known all over the world as the most powerful country in the world.
| A．are, is | B．are, are |
| C．were, is | D．was, are |
The number of people present at the meeting ______ about one thousand, a large number of whom ______ experts from abroad.
| A．was; was | B．was; were |
| C．were; were | D．were; was |
All the scientific evidence ______ that increasing use of chemicals in farming______damaging our health．
| A．show; are | B．shows; are |
| C．show; is | D．shows; is |
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