she had no difficulty _ the problem.A.worked out B.working out C.to work out D.to have worked out

题目

she had no difficulty _ the problem.A.worked out B.working out C.to work out D.to have worked out
she had no difficulty ___ the problem.A.worked out B.working out C.to work out D.to have worked out 为什么选B

答案

have difficulty (in) doing sth.这个句式,按英语老师的话说就是 固定搭配,记住就行!