Помогите пожалуйста.Refer the sentences to the past simple.Example: She is my

Помогите пожалуйста.
Refer the sentences to the past simple.

Example: She is my friend/ Last year she was my friend.

1. I am happy now.-Yesterday_________

2. They are at school today.- Last week________

3. It is rainy in spring.- Last spring_______________

4. It is sunny this summer.- ________________

5.Tim and Bill are in Africa.- _______________