Action, event or activity

(a)   speak louder than words.

The streets were noisy and full of (a)   .

I decided to take absolutely no (a)   at all.

In the light of later (a)   the decision was proved right.

We suspect he might be involved in illegal (a)   .

Everyone was frightened by the strange sequence of (a)   .

Police watched the house all day, but there was no sign of (a)   .

Disciplinary (a)   will be taken against students who cheat.

The room was buzzing with (a)   .

The leaders have agreed on joint (a)   to combat terrorism.