One can figure out the meaning of “ airmail ” to be “ mail by air ” by its ______.

Which of the following is NOT one of the main sources of new words in the present-day English vocabulary?

Which of the following is partially converted?

Washingthefooddownwithwaterasasubstitute________chewingisnotagoodhabit

Washing the food down with water as a substitute ________ chewing is not a good habit