题目内容：

be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at
be bad in还是 be bad for还是 be bad at

优质解答

be bad for something
例子:Candy is bad for your teeth.