Question

The head of the company promised to deal with matters of this sort _____he returned to his office．

A．until

B．while

C．by the time

D．the moment

Answer 1

D

考查连词，until 直到，while 当什么时候，by the time 到什么时候，the moment 一……就，句意：公司的领导答应他一回到办公室就处理这种事情。所以选D。