单选题These shoes look very&nbs

问题补充：

单选题Theseshoeslookverygood.Iwonder__________.A.how much cost they areB.how much do they costC.how much they costD.how much are they cost

答案：

C解析主要测试宾语从句。从语境考虑：句子中动词wonder和cost均需要宾语，还应该注意宾语从句的语序应该用陈述句语序，综上所述