—What ____ is Jane in?—She is in ____ Six.
—Do you have any difficulty______ the work in two days?
—White doesn’t look good _______ you,but you look cool _____ black.
—The green bag reminded the old man _____ the days when he was young.
—We find ______ impossible for us to learn a foreign language well in a short time.
—You should spend as much time as you can_____the piano.