问题补充：
Why don’t you take off your clothes and have them washed? They will soon in the sun.
A. hang out
B. warm up
C. dry out
D. clean up
答案：
A. hang out
B. warm up
(答案→)C. dry out
D. clean up
解析：短语辨析。hang out挂出，闲逛； warm up 热身，变暖；dry out 变干，戒酒；clean up清除；打扫干净。句意：你为什么不拿出你的衣服把他们洗了？在阳光下他们很快就会变干。故选C。
