Understanding the cultural habits of another nation, especially ___containing as many different subcultures as the united states, is very difficult.
The government doesn’t know how to deal with the dangerous situation________all the public are aware of at present.
Don't bother Tom, he is________with the experiment on water molecules in the lab.
It’s_________ comfort to know that so many people are donating money and food to the people in________need.
.After his journey from abroad, Richard Johns returned home, __________.
I’m surprised to see you smoking. You ________, I remember.