—Have you finished your book report?—Not yet. I couldn't________on it with so loud music next door last night.
If only he________ quietly as the doctor instructed, he would be better now.
_______ a report, some 844 animals and plants have disappeared in the last 500 years.
Chinese medicine has amazed many people around the world with its different________ to health.
It is strongly ______ that the machines should be checked every year.
--Can I help you with the heavy bag? --______.