1
2
3
4
5
100

When I was 17 years old, I _______ play the guitar very well

When I was 17 years old, I could play the guitar very well

100

I have a bad cold, so I ___ ____be at work tomorrow morning

I have a bad cold, so I may not be at work tomorrow morning

100

You _______ wear  a tie if you want to go to that restaurant. It is one of their rules!

You have to wear a tie if you want to go to that restaurant. It is one of their rules!
100

Drivers _____ speed the llimit

Drivers mustn't speed the limit

100

Jenny _____ be more patient unless her husband is going to leave her

Jenny should be more patient unless her husband is going to leave her

200

She _____ speak Japanese, Chinese, English and French

She can speak Japanese, Chinese, English and French

200

I don't know what kind of insect this is. It _____ some kind of ant

I don't know what kind of insect this is. It might be some kind of ant

200

I _____ work in my English: I want to speak fluently

I must work in my English: I want to speak fluently

200
Children ________ work
Children don't have to work
200

Sara ______ eat a lot of fatty food because she is going to get sick

Sara shouldn't eat a lot of fatty food because she is going to get sick

300

Kiko, koko and Leo _____ fly, but they _____ swim very well

Kiko,koko and leo can't fly, but they can swim very well

300

Hurry! Let's go to the store before it closes. It ____ ____ be open after six

Hurry! Lets go to the store before it closes. It may not be open after six

300

I _____ go on a diet if I want to lose some weight

I must go on a diet if I want to lose some weight

300

My father ______ ______ be at work at 8:00 o'clock. He is the boss

My father doesn't have to be at work at 8:00 o'clock. He is the boss

300

Shakira ______ sing another kind of songs

Shakira should sing another kind of songs

400

In 1998, my cousin Perla ______  compete in Olympic gymnastics

In 1998, my cousin Perla could compete in Olympic gymnastics

400

Oh! no The airplane _____ be delayed because of the bad weather

Oh! no The airplane may be delayed because of the bad weather

400

We _____ pay attention in the class and try to understand better the grammar rules if we want to get better grades

We must pay attention in the class and try to understand better the grammar rules if we want to get better grades

400
Students _____ _____ go to school on Saturday

Students don't have to go to school on Saturday

400

Lila and her boyfriend ______ do more exercise 

Lila and her boyfriend should do more exercise

500

Fabiola _____ ride a horse, because she is afraid of horses

Fabiola can't ride a horse, because she is afraid of horses

500

What is the capital city of Spain? I am not sure but it _____ be Madrid

What is the capital city of Spain? I am not sure but it might be Madrid

500

Students ______ wear uniform in the school

Students have to wear uniform in the school

500

You ______ drink alcohol if you are going to drive

You mustn't drink alcohol if you are going to drive

500

My neighbors ______ be so noisy

My neighbors shouldn't be so noisy

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