Put the verbs in brackets into correct tense and voice form.
1) Teenagers . . . (prefer) original and eye-catching clothes.
2) Isaac Newton . . . (discover) the law of gravitation in 1665.
3) A person who spends too much time watching TV . . . (call) a "couch potato".
4) The game of basketball . . . (invent) by James Naismith in 1891.
5) Public TV usually . . . (focus) on education and culture.
6) She . . . (wrok) as a babysitter when he was 16.