—WhatdoyoudoMid-autumnDay?—Weusuallyeatabigdinnerandmooncakesintheopenair.[]A.toB.inC.atD.on

Question

—What do you do _______  Mid-autumn Day?
—We usually eat a big dinner and moon cakes in the open air.

[     ]

A. to
B. in
C. at
D. on

Answer 1

D