---What’s wrong with my stomach?---There is nothing serious; you can __________.

Our chemistry teacher          a better way of working out the problem this morning.

 To his joy, the suggestion he put forward at the meeting was _______ immediately.

With the quality-oriented education being carried out, teachers won’t      too much importance to students’ grades.

Only by _______ your attention _______ what you are learning can you learn it well.