______you write so well? —By reading and keeping diaries every day.

been puzzled over the problem for over an hourwithout any result, ____ all at once the solution flashed across my mind

Would you like to play computer games with me— Sorry, I have ________ playing them.

It’s ten p.m. now. Time to go to ________ bed.

Did you catch the early bus this morning?— NoIt had left the stop________I arrived there.[ ]