【单选题】
A: I must apologize to you for the delay. B: [填空].
【判断题】
A: Ought I to leave tomorrow? B: Yes, I think you ought to.
【单选题】
Must I stay at the office this afternoon? ---No, you [填空].
【单选题】
I found the book you recommended in the library, ______ is missing.
①
the front cover of which
②
the front cover of that
【单选题】
In order to ____ your goals, you must work hard.
【单选题】
In order to _______ your goals, you must work hard.
【判断题】
A: Must I attend the meeting? B: No, you neednt.
【单选题】
In some cases, your instructor may tell you the topics ____ or may give you a choice of topics to write about.
【单选题】
You must pay import ____ on certain goods brought into this country.
【单选题】
You must explain_______how they won_______the match.