He the job well, but heso careless.

The large family is really a heavy_______ on hisshoulder, so he has to work day and night.

It’s so cloudy Take an umbrellaplease —

I regret _______ you that you failed the exam.— How I regret _______ so much time playing computer games.

It was in the lab ______ was newly built ______ they carried out the experiment.