用电动牙刷刷牙在一百年前似乎是不可能的.It ( ) ( )to brush teeth with electric toothbrushes a hunderd year ago
问题描述:
用电动牙刷刷牙在一百年前似乎是不可能的.It ( ) ( )to brush teeth with electric toothbrushes a hunderd year ago
答
is impossible