By the time I swa the angry expression o

问题选择题

By the time I swa the angry expression on his face, I ______ exactly what I was having to face. But not for a moment _______ I should quit.

A．had known; I thought

B．have known; had I thought

C．would know; I would think

D．knew; did I think

答案

答案：D

考查时态。尽管句中有by the time引导的时间状语从句，但主句谓语所表达的动作不是发生在从句谓语所表示的动作之前，而是几乎同时发生，所以用一般过去时。By the time此处近乎于at the time之意。此题易误选A。