帮帮忙吧whose books are these?They are not_,but_. (1)whose books are these?They are not_,but_. A.mine/them B.mine/theirs C.your/ours D.his/them (2)_of them know the city very well A.No one B.None C.Much D.A lot (3)The old man_the bus and_to the park. A.gets off/went B.got off/goes C.gets off/went D.got off/went 并写出原因?