Question

【题目】—How long would you like me to heat the oil?

—Heat it till it ________ to smoke.

A. would start B. starts C. will start D. start

Answer 1

【答案】B

【解析】考查状语从句中的时态和主谓一致。时间状语从句中用一般现在时表示将来，it 为单数，would表过去将来，故只能选B。