Вставьте глагол в нужное время! 1)she (do) a grammar exercise now. 2)she is a pupil.she often (do) grammar exereises. 3)she (do) the exereise an hour ago. 4)my grandfather (work) at the circus when he (be) young. 5)don"t ask him any questions now.he(work) .

1)She is doing a grammar exercise now.
2)She is a pupil.She often does grammar exereises.
3)She did the exereise an  hour ago.
4)My grandfather worked at the circus when he was young.
5)Don"t ask him any questions now.He is working