Experts have been warning _____ of the health risks caused by passive smoking[ ]A. at a time B. at o

题目简介

Experts have been warning _____ of the health risks caused by passive smoking[ ]A. at a time B. at o

题目详情

Experts have been warning _____ of the health risks caused by passive smoking
[     ]
A. at a time
B. at one time
C. for some time
D. for the time
题型:单选题难度:偏易来源:江西省高考真题

答案

C

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