Which sentences are complex sentences? Select all that apply. Don’t join the team unless you are willing to work hard, run hard, and play hard.
It’s your turn to play the game.
He bought a one-shouldered backpack, and he walked all the way home.
I won’t go home until I’ve finished all my work.
Julio finished the box of crackers; therefore, there was nothing left for his brother.
No one is at the midwinter dance because everyone went to a concert.

1) Don’t join the team unless you are willing to work hard, run hard, and play hard.

4) I won’t go home until I’ve finished all my work.

5) Julio finished the box of crackers; therefore, there was nothing left for his brother.

6) No one is at the midwinter dance because everyone went to a concert.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.