Помогите пожалуйста.
Put the verbs in brackets in the correct grammar tense.
1. ‘When you _____ (see) Mary?’ – ‘I ______ (see) her last week.’
2. At last I ________ (do) all my homework: now I’ll go out.
3. They_______ (work) hard for many hours before they are able to finish it.
4. What you _______ (read) when I rang you up?
5. ‘You _______ (learn) this poem?’ ‘No! I still ______ (learn) it.