What do you think of Huangshan Mountain?--It’s very attracti
What do you think of Huangshan Mountain?--It’s very attractive!I ________ there once,but I wan
What do you think of Huangshan Mountain?
--It’s very attractive!I ________ there once,
but I want to go there ________ second time.
A.went;
the
B.have gone; a C.have been;
a D.have been; the