Wecan’timaginewhatgreatdifficultytheyhave

来源：语文精选馆 1.54W

We can’t imagine what great difficulty they have ________ the problems in the plan.

A．to settle B．settling

C．settled D．to be settled

解析：此句中 they have 为定语从句。what great difficulty 为先行词，还原即为： have what great difficulty (in) settling ...，故选B项。