Question

【题目】It was several minutes we realized what was happening—our dog was trapped in a newlydug tunnel.

A. since B. before

C. until D. while

Answer 1

【答案】B

【解析】试题分析：句意：过了几分钟我们才意识到发生了什么—我们的狗被新挖的隧道困住了。这里使用了句型：It was+一段时间+before…，“要多久…才/就…”,所以选B。