Ответ:

1. Ride a bike – I think Vadim will ride a bike;

2. Swim in the river – I think Nikita will swim in the river;

3. Play sports games – I think Egor will play sports games;

4. Play in the park – I think Alexander will play in the park;

5. See a lot of films – I think Nastya will see a lot of films;

6. Read a lot of books – I think Sergey will read a lot of books.

Объяснение:

Имена можешь поменять. А так, вроде правильно сделал.