—These Maths problems are too hard to . Can you help me?
—There are many ways, but the most important is to try your best.
A. work out
B. e out
C. put out
D. look out
网友回答
(答案→)A. work out
B. e out
C. put out
D. look out
解析：此题重点考察四个短语的区别。work out 想出; 制订出; 解决; 确定。e out 出现。look out 留神 当心 注意 朝外看put out 熄灭；伸出；出版；使不方便，打扰。