There Is / There Are

The correct answer is "are" because the subject "a lot of boats" is plural, indicating that there are multiple boats at the floating market.

The correct answer is "are" because the sentence indicates that there are multiple green trees along both sides of the canal. "Are" is the plural form of the verb "to be" which is used when referring to more than one thing.

The correct answer is "is" because the subject "white sand" is singular, so it requires the singular form of the verb "is".

The correct answer is "are" because the subject of the sentence is "a woman and a bag," which is plural. Therefore, the verb "are" should be used to agree with the plural subject.

The correct answer is "is" because the sentence is referring to a singular subject, "storm," and is stating that there is no storm in the city today.

The correct answer is "isn't". This is because the sentence is referring to a singular object (black umbrella) and not multiple objects. Therefore, the correct form of the verb "to be" to use is "isn't", which is the contraction of "is not".

The correct answer is "is" because the subject "a lot of pollution" is singular, so it requires the singular form of the verb "is".