Many children seldom communicate with adults it difficult for their parents to know wha

问题补充：

Many children seldom communicate with adults, it difficult for their parents to know what they are thinking about.

A. making

B. makes

C. to make

D. made

答案：

(答案→)A. making

B. makes

C. to make

D. made

解析：考查现在分词做结果状语：句意：很多孩子很少和成年人交流，这使得父母很难知道他们在想什么。因为是顺理成章的结果，用现在分词做结果状语，选A。