Допоможіть будь ласка розкрити дужки!!
although the sun was shining it was still cold as it (rain) hard
Here you are at last. I (wait) for you fot fifteen minutes already
By 8 o`clock i (writing) the report for 2 hours

Although the sun was shining it was still cold as it had been raining hard.Here you are at last. I have been waiting for you fot fifteen minutes already.By 8 o`clock I will have been writing the report for 2 hours