Correct the mistake in each sentence. Grammar: Present perfect continuous and present perfect simple
Example:
1.What are you been doing since I last saw you?
(What have you been doing since I last saw you)

2This isn't the first time we have lose touch.

3Nazir have been spending a lot of time with his friends recently.

4They have just finish studying for their exams.

5She have performed on stage since she was very young and now she is a professional dancer.

6I have doing several courses in art this year.

7We have to stayed in touch since he left.

8I've be catching up with old friends recently.

9I have been wait for you for thirty minutes.

10I have been have nightmares recently.