Поставь предложения в утвердительную (+), отрицательную (-), вопросительную форму (?)
1) Jane didn*t visit the museum. (+,?)
2) Harry celedrated his birthday yesterday (?,-)
3) The waiter served delicious shrimps (?,-)
4) Mary performed on the stage once a month (?,-)
5) We received a nice postcard (?,-)
6) Did he stay with his friends? (+,-)
7) We waited at the airport (?,-)