Допоможть поставити слова в правильному час

1 Teachers use the computer in their work.
2 Look! They are translating the text now.
3 Two years ago he studied at school.
4 Are you writing a dictation now?
5 Have you counted all the mistakes in your dictation already?
6 He will do his military service next year.
7 The usual computer performs many operation per second.
8 Will you study special subjects next year?
9 He finished school last year.