As far as the professor （）, college students should get into the habit of studying by themselves.

单项选择题Ryan was late for the conference yesterday （） the traffic jam.

单项选择题In my bedroom, there is a pair of scissors, a stack of books and （） flowers on my desk.

单项选择题The boy is eager to （） knowledge in different fields.

单项选择题The color of the skirt does not （） that of the coat.

单项选择题He studies so hard to avoid （） at the bottom of the class.