For capital letters, we can just add the ending -s, for example:
I got As in the final exam.
for lower-case letters, an apostrophe is used to avoid confusion:
In the multiple-choice exam all the correct answers happened to be a's! (as in: option a)
Answer:
The most important idea in a text is the central idea.
Explanation:
Answer:
A
Explanation:
bcz it will support you to do work