______giving a general introduction to computer, the course also provides practical experience

Plastic bags are provided for our convenience but they have also_______ the pollution of the environment．

Why doesn’t Jim have his hair cut–I know______.Perhaps he thinks it looks cool.

He made a serious mistake, but he took immediate action to change that ______ it got worse.

What do you want to do next We havehalf an hour before the basketball game.—_____. Whatever you want to do is finewith me.