“Underground” is the only word in the English language _____ begins and ends with the letters “und”.

I think I’ll give Bob a ring.— You __________. You haven’t been in touch with him for ages.

Many difficulties have as a result of the change over to a new type of fuel.

Is your mother badly ill —No, ＿＿＿＿＿, only a little cold.

Little children ask endless questions because they are ______ about everything.