Задание на грамматику. Present, past or future perfect continuous

2) ...... I have been looking for .....
3) ..... it had been raining.....
4) .... will have been working ....
второй лист:
2) ..... hade been raining....
3) ..... have been waiting .....
4) .... shall have been writing ....

2 I have been looking for you
3 It had been raining
4 will have been working

2 as it had been raining hard
3 I have been waiting for you
4 will have been writing