He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．
A．broke in B．broke down C．broke out D．broke up
The police tried to get some clues from the suspect, but he remained ______．
A．silent B．quiet C．calm D．still
The engine of the ship was out of order and the bad weather _____ the helplessness of the crew at sea．
A．turned out B．resulted from C．added to D．made up
The electric library made it impossible for teachers to have ______ to a large amount of information online．
A．way B．method C．access D．means
Some kinds of birds in winter fly to the south to ______ the cold in the north．
A．get away from B．come up with
C．break away from D．put up with
We must apply what we have learned to our daily work because in no case _____ from practice.
A．should theory separate B．should theory be separated
C．theory should separate D．theory should be separated
