Хелп.
с независимого причастного оборота из двух предложений составлено одно. выберите правильный вариант.

1.the rules were simple. we learnt them in a very short time.

а the rules were simple, we having learnt them in a very short time.

б the rules being simple, we learnt them in a very short time.

2.the car stopped. there was no fuel in the tank.

а the car stopped, there being no fuel in the tank.

б the car having stopped, there was no fuel in the tank.

3.we study mаnу different subjects. computer science is the most important of them.

аwe study mаnу different subjects, computer science being the most important of them.

бwe are studying mаnу different subjects, computer science is the most important of them.

4.the article has been written. my supervisor will send it to the editor.

а the article being written, supervisor will send it to the editor.

б the article will be written, supervisor sending it to the editor.

5.the text was not difficult. many words have been learned in good time.

а the text was not difficult, many words having been learned in good time.

б the text being not difficult, many words were learned in good time.