Many Europeans ________ the continent of Africa in the 19th century.
A. exploded
B. exposed
C. explored
expanded
In April, 2009,President Hu inspected the warships in 
Qingdao, ______ the 60th anniversary of the founding of the PLA Navy.
| A．marking | B．marked | C．having marked | D．being marked |
Hard as a teacher may try, he can’t ______to make all his stu
dents make a difference in study, letting alone in life.
| A．make sure | B．be sure | C．guarantee | D．insure |
Hearin
g the news that he had been ______as general manager of the big company, he ______ with excitement and joy, forgetting that he was showing some visitors around.
| A．named; broke out | B．appointed; erupted | C．made; was filled | D．chosen; was full |
Prices keep _______and people have to keep a close eye on their wallet.
| A．going up | B．rising up | C．lifting up | D．raising up |
Thousands and thousands of people attended the president’s inaugural ceremony, with ages _______from 5 to 100.
| A．varying | B．changing | C．ranging | D． rating |