I intended to compare notes with a friend，but unfortunately_________
couldn’t spare me even one minute.
A.they B.one C.who D.it
I intended to compare notes with a friend，but unfortunately_________
couldn’t spare me even one minute.
A.they B.one C.who D.it
A
从句子结构看，but连接的应是并列句，首先可排除关系代词who；另外前述的a friend指认，自然要排除it；they表泛指，符合语境。