Question

It was foolish of you to take a taxi ___ you could easily walk there in five minutes. A．whil..

It was foolish of you to take a taxi ___ you could easily walk there in five minutes. A．while B．when C．since D．before

Answer 1

B

考查状语从句引导词. A.当……时候，强调主从动作同时发生  B. 当……时候   C. 自从……以来  D.在……以前。根据题意，当你能轻松的在五分钟内走到那儿的时候，打出租车简直太蠢了。故选B。