как верно составить и задать вопросы к предложениям its eight ociock

b) do you know Jim?

c) what are you doing at the moment?

d) are you sitting here?

e) do you change trains here?

f) why are you wearing two pullovers?

What time is it? What is the time? Is it eight o'clock already? Is it eight o'clock in the morning or in the evening? Is it eight o'clock am or pm? What time do you make it? Could you tell me what time it is now, please?