--Why do you look so upset, Linda? --There are so many troublesome problems____.
A．remaining settled
B．remaining to be settled
C．remained to settle
D．remained to be settled
答案：B
试题分析：考查固定搭配和非谓语动词。句意：--琳达，你为什么不开心？--(因为)有许多棘手的问题有待解决。There is/are...remaining to be done.有......在等着......，可以看成是固定句型，there be后用动名词，表示“有......正在......”，排除C、D；problems与settle是动宾关系，即问题被解决，应该用被动语态，故选B。 考点：考查固定搭配和非谓语动词