【简答题】You are supposed ____ everything ready by now. A.to get B.getting C.to have got D.having got
【简答题】说明钳工及其加工特点、基本操作工序、种类和应用。
【单选题】This is the first thing you are ________ after you get there.
【简答题】You are supposed (lock) ______ the room before you leave the language lab.