Do remember to be________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
It was foolish of him to _______his note during that important test, and as a result, he got punished.
______hit me suddenly ______ I had forgotten her birthday.
If Joe’s wife won’t go to the party, ________.
It is so cold in Antarctic that the penguins have to stand _______to each other to keep warm.
—Was the judge ______ with the result? —I don’t think so. But perhaps no judge is easy _______.