单选题 —How kind of you to come round, but why? —______that all is right.
【正确答案】 B
【答案解析】[解析] but why的完整意思是“…but why have you come round”，其完整答语应是“I've come round to see that all is right”。答语中省去了主、谓部分，只保留了作目的状语的不定式。其中，see的意思为"make sure(确保)”。