can you stay here a little longer?____,but l have to be back tomorrow.A.No problem B.I'm afraid not C.I'd love to D.No thank you

can you stay here a little longer?____,but l have to be back tomorrow.
A.No problem B.I'm afraid not C.I'd love to D.No thank you

选择C
这里的关键点,是后面的but这个转折,可是我明天必须要回去,所以前面是我想留下来,但是明天我必须要回答,选择C