单项选择题

--Why do you go to work on foot ______ That doesn't seem to save your time. --To get more exercise and keep healthy.

A． all the time
B． at times
C． from time to time
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单项选择题
We ______ to be here at six o'clock.
A． were told
B． told
C． are told
单项选择题
Tom is the tallest of ______ in the family.
A． all others sons
B． all the brothers
C． all other brothers
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