By _____ coincidence, oil paints were developed at the time when ____technique of perspective was used.A. a ; the B \ ; a C. \; the D. a; a
Though he is_______, he never feels_______.
If this dictionary is not yours, ______ can it be?
With fewer and fewer farmers _______ chickens, the price of eggs in the market ________.
—— What do you think of the play? —— Terrible! I,ve never seen _____ one.
. Every minute _______ spoken English.