Which sentences contain subject/verb agreement errors?

1,2,4

Explanation:The issue with the sentence as it is written is that the subject of the sentence, "every night," is singular, but the verb "were" is plural. The subject and the verb must agree. The correct answer is "Every night for five straight nights was well below freezing."

hope it helps!!

the answer to this question

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."