A good teacher has to be able to think . [ ] A.on foot B.by foot C.by his feet D
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![A good teacher has to be able to think . [ ] A.on foot B.by foot C.by his feet D](/pic/43_940177.jpg)
A good teacher has to be able to think ________.
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A.on foot | B.by foot |
C.by his feet | D.on his feet |
试题答案
答案:D
提示:on one's feet独自地 |