You must have your luggage ____ first before you board the a

You must have your luggage ____ first before you board the a you must ____(knock)on the door before you enter 4.First,follow your dream.You must have a direction for your First you must ____ ____(穿过）the bridge. Now let's play a game First you must keep your eyes ____ You must have your bike ----before I come for it.A.repaired 1、you __ finish your homework first.A、must B、have C、had D、ha You must first be finished before lunch. All the computers must be ____ down before you leave. you must restart your computer before the new settings will you must restart your computer before proceeding with the in You must restart your computer before proceeding with the rs