The students are clever. They have no problems ____

试题详情及答案解析

The students are clever. They have no problems _____ out the math problem.

A．work

B．working

C．works

D．to work

答案：B

试题分析：句意:这些学生很聪明。他们在做这道数学题时没什么困难。have problems (in) doing sth 表示“做……有困难”;work out是“做出”的意思‘故选B。
考点：考查非谓语动词。