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3.HehasbeentoChina,________?（写出反义疑问句部分(bùfen)）WhatarethekeywordsforthePresentPerfectTense?Someverbscan'toftenbeusedwith"for"or"since"PleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectPleasepointoutanymistakesandcorrectcanyoudistinguish?canyoudistinguish?canyoudistinguish?canyoudistinguish?ThepasttenseorthepresentperfecttenseThepasttenseorthepresentperfecttenseThepasttenseorthepresentperfecttenseThepasttenseorthepresentperfecttenseEXERCISE2.Thefamouswriter____onenewbookinthepasttwoyear.Ａ.iswritingＢ.waswritingＣ.wroteＤ.haswritten5.—ThesefarmershavebeentotheUnitedStates.—Really?When___there?Ａ.willtheygoＢ.didtheygoＣ.dotheygoＤ.havetheygone感谢您的观看(guānkàn)！
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