问题
选择题
31. Tom and his father_______America last week, and arrived there this Tuesday morning.
A．set for
B．set off
C．set off for
D．set off to
答案
答案：C
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31. Tom and his father_______America last week, and arrived there this Tuesday morning.
A．set for
B．set off
C．set off for
D．set off to
答案：C