次の英文の下線部①②の（ ）に当てはまる動詞を、下の［ ］の中から１語ずつ選び、最も適切な形になおして書きなさい。
Bell is ① ( ) as an invertor of the telephone, but he was also a teacher of deaf people.
Bell's father was a teacher who studied speech. He was famous for making the symbols to show every sound a mouth could make. They were ②( ) to teach deaf people how to speak.
invertor 発明家 deaf 耳の不自由な symbols 記号
[ go know put use hear ]
① known ② used
be known as ~ 「～として知られている」
be used to ~「～のために使われる」
be known の次に続く as 以外の前置詞も覚えておこう。
be known to ~ 「～に知られている」
be known for ~ 「～で知られている」