—Can you guess _______ ?— I've no idea about it.A. why was he lateB. when shall we have the sports meetingC. how much he paid for the camera
—What colour of the following represents “purity”? —______.
—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.