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--- do you usually go to school?--- By bus.
— do you usually go to school? —By bus.
--- do you usually go to school?
--- By bus.
A．How B．When C．How long D．How far
A．How long B．When C．How D．How far
—_______ do you usually go to school?— On foot.
A. What B. When C. Why. D. How