问题标题：
用since和for各造5句现在完成时的句子.
问题描述：
用since和for各造5句现在完成时的句子.
韩彩霞回答：
HehasbeentoBeijingsince2007.
Ihavelivedinheresincelastmonth.
IhavebeeninterestedinEnglishsinceIwas7yearsold.
Hehasreadalotofbooksincehewasyoung.
Theyhavewrittenmanybookssincetheywereinhighschool.
Thefilmhasbeenonfor15minutes.
Hehasplayedthecomputergamesforservralhours.
Ihavebeendiongmyhomeworkfor2hours.
Shehasbeencryingforhalfanhour.
Wehavebeenhereforaweek.
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