GRAMMAR:
"it's supposed to" vs "Should" vs "Must"

DONALD TRUMP SAID SOMETHING STUPID

He should have thought before he spoke. 

he must have been drunk.  

DO LESSON

TWO RESPONSES TO EACH SITUATION, ONE ITH SHOULD HAVE, ONE WITH MUST HAVE. 

MAYBE MORE WITH COULD HAVE, WOULD HAVE, ET? 

IT'S SUPPOSED TO

1. The meeting is supposed to be at 10 AM.

2. She's supposed to be the best chef in town.

3. This software is supposed to be user-friendly.

4. They were supposed to be here an hour ago.

5. The instructions are supposed to be clear and simple.

6. The mail is supposed to arrive before noon. 

7. the government is supposed to be a help, not a hindrance.
   
   
   

SHOULD

1. You should be studying for your exams right now.

2. This recipe should be enough for four people.

3. The weather should be nicer tomorrow.

4. You should be able to find the information online.

5. The report should be finished by Friday.

6. It’s 7:00 am, the gym should be open now.  

7. the document isn’t long.  it shouldn’t be difficult to translate.  

MUST

1. You must submit your application by the deadline.

2. All visitors must sign in at the front desk.

3. You must wear a helmet when riding a bike.

4. Employees must follow the company’s code of conduct.

5. This password must be at least eight characters long.

6. Employees must wash their hands before returning to work. 

7. I can’t find my headphones.  I must have left them on the train.