Question

英语翻译1电梯有些失灵了（operate）2他的计划看起来太困难,但是没多久就被证明很实用（before long）3进

Answer 1

1 The elevator doesn't operate well.(operate)

2 His plan seemed to be too difficult,but it turned out to be very useful before long.(before long)

3 Remove the mud from your body before you come in.(remove)