1. я навещаю бабушку каждое лето 2. мы навещаем лучшего друга в больнице сейчас 3. он посетил эту страну в этом году 4. дети ломают все игрушки 5. он не ломает твой автобус 6. мы…

1. I visit my grandmother every summer.
2. We are visiting our best friend in the hospital right now.
3. He visits this country this year. (Note: If you mean "he visited" as a past action, that would be "He visited this country this year" which is technically correct for the context but not in the present tense.)
4. The children break all the toys.
5. He does not break your bus.
6. We break this ourselves.
7. How often do you see this?
8. What are you looking for right now?
9. Have you found your cat today? (Note: This is in the present perfect tense, which is commonly used in English for actions that have relevance to the present.)

If you're looking to strictly keep everything in the present tense, the last one can be expressed as "Do you find your cat today?" although it sounds less natural.