Решение:
В упражнении нужно вставить глагол 'to be' в правильной форме, основываясь на контексте предложения.
- Hello! My name is Alan. I am thirteen. My friend's name is David. He is thirteen, too. We are at the seaside. The weather is sunny. There are many people on the beach. We had a good time. I hope next summer will be sunny and warm, too. There were a lot of nice days. I have never been to other countries. Some day in future I will be lucky to visit London and my holidays will be great.
Ответ: is, am, is, is, are, is, are, will be, were, have never been, will be, will be.