根据句意或提示,写出句中所缺单词

问题描述:

根据句意或提示,写出句中所缺单词
1.You shouldn't lose a ____ "m" in the word "member".Please spell it again.
2.____ at the teeth of the lion.They are very sharp.

letter
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1.You shouldn't lose a letter "m" in the word "member".Please spell it again.
2.Look at the teeth of the lion.They are very sharp.