Решение:
- 1. Alex is going to visit his grandparents in the countryside. — True (T). В письме сказано: "First, I am going to visit my grandparents in the countryside."
- 2. He is going to stay there for three weeks. — False (F). В письме сказано: "I am going to stay there for two weeks.".
- 3. Alex and his family are going to go to the mountains. — False (F). В письме сказано: "After that, my family and I are going to go to the sea."
- 4. He is going to learn how to ride a bike. — True (T). В письме сказано: "I am also going to learn how to ride a bike."
- 5. In the evenings, Alex and Jack are going to play football together. — True (T). В письме сказано: "In the evenings, we are going to play football together."
Ответ: 1-T, 2-F, 3-F, 4-T, 5-T.