are

The boy_____ his father. Nobody think they are a family.

The problem with some of these drugs is that they are so _______.

Some TV programs are interesting but some others are ______ and full of violence.

Many children，          parents are away working in big cities，are taken good care of in the village.

Some people who don’t like to talk much are not necessarily shy；they        just be quiet people.

Farmers ____ by government to do odd jobs in cities when they are free.

Are you worried____ your son who is at home alone?

You are never       old to learn (活到老学到老)

We are invited to a party _________in our club next Friday

The _______ students are required to take at least ten courses each semester.