Modals in Passive

Jack has a right to know. He ________ the news immediately. If you don’t do it, I will.

• ought to tell

• ought to be told

• may tell

• may be told

A package __________ carefully before it is mailed.

• has to be wrapped

• has to wrap

• had to be wrapped

• had to wrap

The games are open to anyone who wants to join in. Everyone __________.

• can be participated

• could be partipated

• can participate

• could participate

You'd better not drink that river water. It __________.

• could be polluted

• could pollute

• can be polluted

• can pollute

A bald eagle __________from the other large birds by its white head and white tail.

• can distinguish

• can be distinguished

• could distinguish

• could be distinguished

I have no patience with gossips. What I told Bill was a secret. He __________it to you.

• mightn't have repeated

• shouldn't have repeated

• shouldn't have been repeated

• couldn't have been repeated

I don't know why Jessica wasn't at the meeting. She ________about it.

• must forget

• must be forgotten

• must have forgotten

• must have been forgotten

The accident ruin _________as early as 1792. The historical record is difficult to interpret.

• may have been discovered

• may discover

• may have discovered

• may discovered

This burn out light bulb __________days ago. Could you do it for me?

• should replace

• should have replaced

• should be replaced

• should have been replaced

I think everyone __________this paperback on the economic crisis. It contains information that everyone should have.

• should be read

• should have read

• should read

• should have been read