It is vital to ______ to teenagers the simple fact that _______ the Internet will more or less do harm to both mental and physical health.

The problem ___ we should put off the sports meet ___ at the meeting yesterday.

When the head teacher announced his plan for an autumn outing, the _______ of the students in the class _____for it.

We don’t allow at school. It’s bad for our health.

The novel is an important form of .