请选择CBA8O3O-G5n4E)W*s1~-Q7?4U.w7m(Y ----_______did you go on your holiday?7H/E7s4B2h.~-D
----Shanghai.7H/E7s4B2h.~-D
A. What7H/E7s4B2h.~-D
B. Where7H/E7s4B2h.~-D
C. How7H/E7s4B2h.~-D