121. The problem was that Einstein’s familydid not have enough money to pay for hisfurther .

The best way to deal with an impolite person is to _____ him. [ ]

five professional hands ______ them next month, these students are sure to complete the experiment on time.

Skating on the ice is ______.

Tsinghua University,________ in 1911,is home to a great number of outstanding figures.