Should, Must, Have to

Does she really have to go now.

Thank goodness, we don't have to eat fish again today. Dad didn't catch any today. 

I've already finished all my work, so I don't have to study tonight. 

I shouldn't forget to take my key with me. 

This is an opportunity that comes in a life time. We shouldn't let it pass. 


Darren, you mustn't/shouldn't play with sharp knives. 

You mustn't leave your keys in the car. 

In order to be a good sales clerk, you mustn't be a rude customer.

I have a test tomorrow. I must study tonight.

A person must eat in order to live. 

Where's Sue. I must talk to her right away. I have an urgent message for her.


I'm looking for Susan. I should talk to her about our lunch date tomorrow.


Everyone should have certain goals in life.

You must take exercises, if you want to succeed.


To be a successful mountain climber, you must have a great deal of stamina.


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