单项选择题

Because of a lack of money, we had to ______ the plan later.

A．call off
B．call on
C．call up
D．call for
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单项选择题
Which of the following does the author mention as a possible disadvantage of telecommuting
A．Small children can't understand the boundaries of work and play.
B．Computer technology is not advanced enough to meet the needs of every situation.
C．Technological troubles can destroy the program.
D．The worker often does not have all the needed resources at home.
单项选择题
Which of the following is not mentioned as a problem for office employees
A．Being restricted to the office.
B．Saving expenses for lunches and clothing.
C．Taking care of sick children.
D．Driving in heavy traffic.
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