英语必修4外研版作业（13）及答案解析 section b grammar 单项选择（1） 1. ______ life pace continues to speed up, we are quickly losing the art of enjoyment. a. with b. when c. as d. while 2. ______ the poem a second time, the meaning will become clearer to you. a. your having read b. if reading c. while reading d. when you read 3. the head of the company promised to deal with matters of his sort ______ he returned to company.
