Question

There is a wallet lying on the ground．I wonder________it is．

Answer 1

答案B

分析：宾语从句所缺的是is的表语,而it是指上文中的wallet,可以设想原来的句子可能是The wallet is his．/The wallet is expensive．/The wallet is in my pocket．等,但只有his可以提问为选项中的whose．句意是“我不知道那是谁的.”