现在完成时练习 1.I __ already___ (see) the film.I____ (see)it last week.2.What_ Tom______(do)now?He _________ (wprk)on a maths problem. ___ he ____(work)it out ? No,not yet.I _____ (think)he ______ (work)it out soon. 3._____ you ____(be)to Hon
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