1 Clavichord is called by us.（一般现在时被动：be+过去分词）
2 It was made in Germany in 1681 by someone.（一般过去时被动;was/were+过去分词）
3 Our clavichord is kept in the living room by us.（一般现在时被动)
4 The instrument was bought many years ago by my grandfather.（一般过去时被动)
5 It was damaged by a visitor recently.(一般过去时被动）
6 Two of the string were broken by her.(一般过去时被动,主语是复数,故谓语动词用were.）
7 My father was shocked by this.(一般过去时被动）
8 We are not allowed to touch it now.(一般现在时被动)
9 It is being repaired by a friend of my father's.（现在进行时被动：be+being+过去分词）