将课文里的被动语态改成主动语态.
Wehaveanoldmusicalinstrument.Itiscalledaclavichord.ItwasmadeinGermanyin1681.Ourclavichordiskeptinthelivingroom.Ithasbelongedtoourfamilyforalongtime.Theinstrumentwasboughtbymygrandfathermanyyearsago.Recentlyitwasdamagedbyavisitor.Shetriedtoplayjazzonit!Shestruckthekeystoohardandtwoofthestringswerebroken.Myfatherwasshocked.Nowwearenotallowedtotouchit.Itisbeingrepairedbyafriendofmyfather's.