英语单选并说明理由!（ ）24．The children are waiting ---------- a bus at

英语单选并说明理由!
（ ）24．The children are waiting __________ a bus at the bus stop.
A．for B．of C．with D．at
（ ）21．There __________ all kinds of TV programmes on TV every day.
A．is B．are C．was D．were
（ ）22．Uncle Wang is friendly.We like __________ very much.
A．she B．her C．he D．him
（ ）27．My father promised __________ me a present on Christmas.
A．to give B．gave C．gives D．giving
（ ）28．—Can you see the sign “No Parking”?
—Sorry,I__________.
A．needn’t B．can’t C．may D．mustn’t