Q5. Fifteen kilometers a nice distance to ski in an afternoon.
O is
O are

Q6. Analysing sentences for grammatical purposes___
watching paint dry.
O is
O are
Q7. Economics___
almost as fascinating as accounting.

O is
O are

5. Fifteen kilometers is a nice distance to ski in an afternoon.

6.  Analyzing sentences for grammatical purposes is even better than watching paint dry.

7. Economics is almost as fascinating as accounting.

Explanation:

The use of "is" or "are" depends majorly on the condition of the noun involved. This means that if the noun is singular, we use "is" while for plural nouns, we use "are".

In the given sentences, "is" and "are" are used as follows-

5. In this sentence, the distance "fifteen kilometers" is taken as a single unit even though the word "kilometers" is in the plural state. Thus, the helping verb will be "is".

6. Here, the verb "analyzing" is taken as a gerund, thereby functioning as a noun. And so, the helping verb used will be "is".

7. Similarly, this sentence contains the noun "economics" which is a branch of study and thereby taken as a singular noun. Thus, the verb will be "is".

Thus, in all three sentences, the helping verb used will be "is".

kellan is struggling with the amount of work he has to do

hope this : 3

the significance of the title, "the passing", is related to the fact that the main characters, who are three african-american descendant women, are passing as white. this means that, because of their light-coloured skins they look like white women. one of the three friends, clare, is married to a white man and she lives in a white community and she has never told her husband that she is black. the title can easily be connected to the idea of pretending to be someone you are not and of losing your real identity in order to be accepted by society.