参考翻译答案如下：

1. They were poor; but they could speak the same language,
and could continue their work together.

2. They were glad to find out that they spoke the same language and soon became buddy-buddy.

3. Jonah found few people spoke the same language to him at that university.

4. His brother and he cannot speak the same language.

5. Peter and Sabah have spoken the same language lately——they agree about almost everything.