4. Sales to the British forces are expected to ______ .
A、drop behind
B、drop out
C、drop off
D、drop back
4. Sales to the British forces are expected to ______ . A、d - Unit 4 Tales ancient and modern - 《新标准大学英语》综合教程(第三册)(第四次开课) - 重庆高校在线开放课程平台 | 大学网课搜题引擎