Use the drop-down menus to choose the coordinating conjunction that best connects the two independent clauses.

Carlos put his books in his backpack, then he walked to the library.

My sister loves dogs, my brother prefers cats.

Dad will make spaghetti for dinner, he will take us out for pizza.

Which sentences are complex sentences? Check all that apply.

You will need to talk to Mr. Cortez if you want to try out for the play.

Brooke is a strong athlete, and she is also a hardworking student.

Although many people dislike reptiles, I think snakes are fascinating.

Elijah wants to buy a guitar, but he hasn't saved up enough money.

Once I finish knitting this scarf, I will make a matching hat.

The coordinating conjuctions in English are just three "and, or, but". 'And' is used to add information, 'or' to indicate alternatives, and 'but' to express contrast. These conjuctions link only units of the same level / status, for example independent clauses.

1° sentence: Carlos put his books in his backpack, and he walked to the library. Here 'and' is appropiate because you need to add information.

2° sentence: My sister loves dogs but my brother prefers cats. 'But' is the correct one to indicate contrast between the two people's preferences.

3° sentence: Dad will make spaghetti for dinner or he will take us out for pizza. 'Or' is the correct one since the independent sentences signal alternatives