David got a higher grade in the final exam, for, you see, he made        mistakes.

You should take ____________ measures to improve your working conditions．

If you tend to regularly suffer from a certain symptom like headache, be sure to keep in store the       medicine to take care of the issue as soon as it starts.

 Interest is as ________ to learning as the ability to understand, even more so.

______ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.