正确的应是 when do you do sth,如 when do you get up in the morning?你早上几点起床?其原问题是
“—when _______Henry______HainanIsland?"
“—Next Sunday"
A.is;visiting
B.do;visit
C.is;going to visit
D.does;visit 选哪个好哪？两个空都说明一下，尤其是第二个空，还要注意是“—Next Sunday"选c 因为有next sunday,故要用将来时，be +going to do 表示将来打算做某事。