A 英语中there be句型表示“有、存在”,不能和have连用；judging在此和telling用法同,都表示“判断、区别”,但在这里不如telling地道.即修改为There seems to be; judging
C 如果以It seems to be开头,则后面应接difficult（形容词）做表语,而题干中的意思显然是“有……”；there be difficulty doing sth,这里用divide也不对.应该修改为There seems to be; dividing
D 以It seems that开头的句型,后边应接从句；仅从语法看,这里应修改为There seems to be; separating,但separate一词一般不这样用