问题补充：
----Three problems are too hard to . Will you give me some advice?
----There are many ways. The mostt important is to have a careful plan.
A. work out
B. look out
C. hand out
D. break out
答案：
(答案→)A. work out
B. look out
C. hand out
D. break out
解析：动词短语辨析work out算出，制定出；look out 当心，小心挑选出； hand out 分发，施舍；break out（战争、火灾等）爆发，（疾病的）突然发生
