Tony is afraid of being alone at home（同义句转换） Tony
题目
Tony is afraid of being alone at home（同义句转换） Tony
Tony is afraid of being alone at home（同义句转换）
Tony is afraid ______ _______ alone at home
Betty got lost on her way to the hospital.（改为否定句）
Betty ______ _______ lost on her way to the hospital
答案
保证准确!
to be
即：be afraid of doing sth = be afraid to do sth
didn't get
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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