His parents, ________, did not look after him very well: the elbows of his jacket and his boots were badly worn [ ]

The trip from the school ________ about two hours by bus. It was too _________.

ch do you have in your pocket—150 yuan, all of _______ came from my grandma.

My father _________ Beijing many times. He _________there again last week.

s warn that medical waste from hospitals, if properly, may contribute to spreading diseases．