Question

______ he was exercising at the park yesterday morning, he found a purse under the tree.

A. While                            B. Before                            C. Though

 

Answer 1

A

【解析】

试题分析：句意：昨天早晨，当他正在公园锻炼的时候，他发现树下有一个钱包。分析选项：while当……时候；before之前；though虽然。联系句意为当……时候。故选 A

考点：考查连词的用法。