---What do we need to pack for the beach vacation, mum?
--- I guess we need sunglasses to the sun.
A. turn off
B. keep out
C. give out
D. put off
网友回答
A. turn off
(答案→)B. keep out
C. give out
D. put off
解析：此题重点考查四个短语的区别。Turn off 表示关掉，keep out表示阻止…give out表示释放，put off表示脱掉，根据语境B为最佳答案。