Очень важно )

Use the Infinitives in brackets in the necessary tense-form.
1. We (to meet) twice a week.
2. I (not understand) your remark.
3. He often (to spend) his summer vacation at the sea-side.
4. She usually (to walk) to the University.
5. We always (to be glad) to see you here.
6. He usually (to be late) on Saturday.
7. What foreign languages your friend (to speak)?
8. I (to know) this men. He often (to call on) us.
9. It often (to rain) here?
10. You (to see) anybody in the street?
11. It (to snow) hard last winter and the children often (to make) a snowman.
12. He not (to ring up) me yesterday.​