单项选择题
According to the first paragraph, the library sends the application form to the readers so that they can（）
A．read ordinary books B．order cassette players C．buy Calibre cassettes D．use the library service
单项选择题 The bicycle you referred to isn"t ______. It belongs to ______.
单项选择题 —I thought you were going to the mountains last week.—I"d want to, but I was ______ busy to leave.
单项选择题 That young man has made so much noise that he ______ not have been allowed to attend the concert.
