选择：You have been doing washing all the morning.You must be t

选择：You have been doing washing all the morning.You must be t where __you __(be),we have been looking for you all morning have you finished doing all the exercises You must be come to the meeting on time I___ A.must B.have t what have you been doing what you have been doing 英语反义疑问句疑惑2 You must have been to the Great Wall,__haven't yo 33.Working in the factory for years,you must have been ( ) t would you mind doing the washing?A yes I do B sorry I won‘t by the way,what have you been doing. Have you ever been ill?When you are ill,you must be unhappy 英语翻译Have you ever been ill?When you are ill,you must be unha