Question

In each of the following sentences supply a Verb in a agreement with its Subject:(The cost of all these articles _________ risen.)​

Answer 1

ans is *have*

Explanation:

we have to use *have* since there is plural number of objects i.e "articles".

secondly..the speaker is talking as a whole about the " articles" and not individually about each article

for eg

if the sentence was

the cost of each of these articles _ risen

then we had to use 'has' since here the speaker is talking about each article individually

I hope it helps☺

Answer 2

Answer:

The answer is "are"

Explanation:

The cost of all these articles __are___ risen.