Question

1. choose the appropriate tense-form. 1. a. - what have you done/have you been doing with my knife? where is it? b. - i've put it back in your drawer. a. - (taking it out) what have you done/have you been doing with it? the blade's all twisted! have you been using/have you used it to open tins? 2. a. - do you see those people on that little sandy island? they have been waving/have waved their handkerchiefs for the last half-hour. i wonder why. b. - they need help. the tide is coming in and very soon that island will be under water. have you sat/have you been sitting calmly without doing anything to help them? a. - i have never been/have never been being here before i haven't been hearing/haven't heard about the tides here. what's up? what are you looking for/have you been looking for? have you lost/have you been losing something? 3. a. - are you still painting/have you been still painting your country house? b. - yes. i'm painting/i've been painting it for several days already. i think it'll look beautiful when it's finished.

Answer 1

1.What have you done?
2.What have you been doing with it? | Have you used it... Хотя я бы написал Did you use it... 
3.They have been waving...
4.Have you sat.(Не очень понял вообще)
5.I ve never been here before.| I havent heard about tides.
6.What are you looking for?| Have you lost something?
7.Are you still painting your country house?
8.Yes. I have been painting it for several days alreay.