-- I called you last night but no one answered it. -- Oh, sorry. It must be that I had just finished my assignment and ______ a walk in the garden.
Nowadays, people get news around them and about the world from ______ media: on TV, by radio, in the newspaper or on the Internet.
Less than twenty percent of the employees in their company are women. That is to say, women are in the ______.
Just like fingerprints, each person’s DNA is ______ unless he has a twin.
-How do you often spend your summer holidays?-I often go hiking, for I like ______ nature.
His ______ that he was to blame kept the others from being punished.