问题
选择题
The child has to come to school by bike ________ his own.
A．in
B．by
C．on
D．of
答案
答案：C
题目分析：句意：这个孩子不得不自己骑自行车来上学。on one’s own 自己做某事，故选C。
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The child has to come to school by bike ________ his own.
A．in
B．by
C．on
D．of
答案：C
题目分析：句意：这个孩子不得不自己骑自行车来上学。on one’s own 自己做某事，故选C。