1.In 1921,Phan Boi Chau studied socialism and the Soviet Union in....assistance from the Soviet socialist groups.

A.hope to gain    B.the hope of gaining   C.hope of gaining D.the hope to gain

2.Bill Gate's....in donating large sums of money towards welfare activities is remarkable.

A.generosity   B.politeness    C.talent     D.wealth

3.Dr.Jane Luu....the huge telescope at the University of Hawaii while she...for any bodies beyond Neptune.

A.was using-searched         B.used-had searched

C.used-was searching           D.had used-searched

4.Naming streets after...fgures is a common practice around the world.

A.historical    B.important    C.essential     D.historic

5.The teacher gave back the papers which...marked.

A.was     B.has been     C.had been        D.have been

6.By the year 2010 many people currently employed...their jobs.

A.have lost   B.are losing   C.will have lost    D.will be losing