Употребите глагол в нужной форме:
1. He usually (have) a lot pf work to do
2. There (be) many English and French books in his library
3. His elder sister (work) in a factory two years ago
4. She never (see) her aunt
5. His sister (collect) stamps last year
6. Next week there (be) a concert in the park
7. He (not to know) anything about his parents