Many children seldom municate with adults, it difficult for their parents to know what they are thinking about.
A. making
B. makes
C. to make
D. made
网友回答
(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。