Could and couldn't.

Where could we go in vacations?

• We could go to the public pool.

• We could went to the public pool.

• We couldn't go to the public pool.

I ____________ make a cake because

I don't have sugar

• could

• couldn't

Alex is good at speaking english. He ____________ tutor younger children

• could

• couldn't

Dany has a lot of markers in his pencil case.

He __________ make the poster for the cake sale.

• could

• couldn't

Arlene and Maria ____________ complete the exam because they came late today.

• could

• couldn't

Raymond ____________ buy a ticket for the concert because he doesn't have money.

• could

• couldn't

Choose the correct sentence.

• Angele couldn't find her cat.

• Angele couldn'tt find her cat.

• Angele couldn't not find her cat.

Positive auxiliary

• could

• couldn't

Negative auxiliary

• could

• couldn't

Positive auxiliary