Don‘t eat sweets before ________to bed.It’s _______your teethA、go；bad for B、going；bad for C、going good for D、go bad to
问题描述：
Don‘t eat sweets before ________to bed.It’s _______your teeth
A、go；bad for B、going；bad for C、going good for D、go bad to
答
A
答
B
before 后跟动词ing 形式
be bad for 对...有害