Michael often goes to school ____ foot.
A. by B. in C. on
答案:C
on foot 固定短语
3×4×1=13______.(判断对错)
北魏建立者是鲜卑拓跋氏,其开国皇帝是:()
A、拓跋珪
B、拓跋宏
C、拓跋焘
D、拓跋嗣