He____know the answer, but I’m not sure.A:maybe B:may be C:may D:must
Last weekend I didn’t _______ any cows but I ______ some horses.
—Is there _______ chicken in the hamburgers? — No, there isn’t _______.
My sister is good at ________.
Don’t arrive late ________ class.
Jeff _______ heavy and he ________ brown hair.