Eal of detailed research is being performed in this area

?You ___must_______ be 18 to see that film.

?You __should______hear this story. It’s very funny.

?Dad __should_____go and see a doctor. His cough is getting worse all the time.

?You don’t have to shout. I __can_______hear you very well.

?It ___can’t______be him. I saw him a week ago, and he didn’t look like that.

?You look pretty tired. I think you ___should_______go to bed early tonight.

?“Children, you __ should _______cross the street if the lights are red!”

?You ___ shouldn’t______sit so near the TV. It’s bad for your eyes.

?I’m sorry but I __can’t_______give you a lift because my car is broken.

?I __can’t_____stop and talk to you now. I have to get to the library.

?You really __ should ________go to the Louvre if you’re in Paris. It’s wonderful.