单项选择题

The governmental departments concerned are aware that there are downfalls ______ more cars on the roads.

A．to have
B．having
C．to having
D．on having
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单项选择题
After the Second World War fashionable short skirts ______ to ankle length.
A．shortened
B．dropped
C．lowered
D．lengthen
单项选择题
There are two types of employees: Those who do the work and those who take the credit. Try to be in the first group; there is much ______ competition there.
A．more
B．less
C．little
D．few
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