— I’d like to go home now.— Why not stay here for the night? It is so late now. ____, it is raining so hard.
We are living in an age ______ we treasure very much, because it sees man’s rapid development.
These comments are not directly ______ to the inquiry about safety standards.
______ to nuclear radiation, even for a short time, may influence genes in human bodies.
We are short of clean safe drinking water, which is found to be the ______ in many third world countries.
Colonel Edward is not his real name, and it’s one he uses to ______ his identity.