Fill in the blanks with the correct verb form. When you have finished all the questions, click on the Get Score button at the bottom of the page to see your score and the correct answers.
Passive and active with modals. Use the modals should, should have, must, could, could have, might, might have, have to, had better, supposed to, would.
Rules:
Passive form - modal + be + past participle
Past passive form - modal + have been + past participle