Viết lại câu sao cho nghĩa không đổi

Dưới đây là cách viết lại các câu sao cho nghĩa không đổi:

1. James got old, so he became wise.
2. The city was modern because the living standard got high.
3. Spending a lot of time working causes her to feel stressed.
4. The apartment is big, which means the rent is high.
5. The children are young; thus, it is easy for them to remember the lesson.
6. The joke is good, and the laughter is loud.