Either you or one of your students __________ to attend the meeting that is due tomorrow.

下列不属于骈句的一项是（ ）

No one knows the age of the old man wandering in the street all day, but judging from his appearance, he is in his sixties.

The prices of houses, ____________ is often reported, have been going up sharply in the past few months

I like getting up very early in summer Themorning air is so good ______