Question

There ___ to be nothing wrong with her sister, ___?

A、seem;isn’t it B、seems;doesn’t there C、seem;isn’t there D、seems;doesn’t it
请给出答案及解析

Answer 1

B
to be nothing wrong with her sister是不定式作主语，单数意义，动词要用单数的seems；排除A和C；附加问句是针对seems的，故用助动词的does，还要遵照there be的句型，故排除D

Answer 2

A. seem;isn’t it

There seem to be ... 是“看起来 ...”的意思，句尾的否定疑问句是针对这个“表面推断”而来
正确翻译这种语气就是：“她妹妹看起来没啥问题，不是吗？”