1.I have been studying English for 5 years - я изучаю английский 5 лет

Present Perfect Continious.

2.I go shopping every week. - я хожу в магазин каждую неделю. -

Present simple

3. I'm reading a book now - я читаю книгу сейчас

Present continious

4. I made a mistake - я сделал ошибку

Past Simiple

Ответ:

1) She isn't working now

2) The task hasn't been finished

3) How long have you been living there?

4) I didn't want to take part in it