. Write the correct form of the verbs : 1. We (to pick ) nuts in the forest today. 2. The students to spend ) their last summer holidays in the mountains. 3. 1( to watch ) the clouds now. 4. My sister ( to find ) a little bird in the forest the day before yesterday. 5. The pupils always ( to understand ) their teacher. 6. He (to go ) on telling his story in a minute. 7. Billy (to eat ) fruit and vegetables every day. 8. The child ( to make ) his bed at this moment. 9. I( to call ) just my granny. 10. Helen ( to keep ) to a diet next month. 11. We (to have ) a good time recently. 12. Children to swim ) in the lake last summer. 13. David often (to repair ) his bicycle himself. 14. Kate ( to make ) a cake now. 15. ( to do ) morning exercises three hours ago. 16. They never ( to play ) hopscotch. 17. We (to write ) letters to our pen-friends tomorrow. 18. He ( to sleep) on the sofa yesterday afternoon. 19. My sister ( to arrive ) to London soon. 20.I( to drink ) coffee twice this morning.