B. ITS/ IT'S: Another homonym using a contraction is the word "its" or "it's"

"It's" is a contraction for 'it is', as in the sentences:

"It's about time that student came to class and participated in the discussions."
"It is about time that student came to class and participated in the discussions."

"Its" is a possessive meaning, 'belonging to it', as in the sentence:

"The cover is loose, its fastenings have broken."

'The cover is loose because the cover's fastenings have broken.'
'The cover is loose because the fastenings of the cover have broken.'

C. TO, TWO, TOO: We have already discussed the word 'too' and that it should NEVER BE USED in formal writing.

A. 'To" is a preposition used with the infinitive form of every verb in English, as in, 'to understand', 'to know', 'to comprehend', 'to exist', or 'to learn.'

B. "To' is also a preposition indicating direction and means 'in the direction of', 'toward', and 'on the way to', as in the sentence:

"On the way to school, the student read the chapter assigned for the day."

You will need to use this word almost constantly.

C. 'Two' means the quantity (number) '2' and nothing else, as in the sentence:

"Those two students are the best in the class because they always study and complete their assignments."

D. ACCEPT/EXCEPT: This is one of those instances when the homonyms not only sound alike but also actually have opposite (or nearly opposite) meanings.

1. to 'accept' is a verb which means to 'include', 'believe', 'recognize', 'agree to', 'admit', 'acknowledge', 'allow', 'agree to', 'consent', 'receive', 'take', 'put up with', 'endure', 'tolerate', 'take on', 'undertake', or 'assume', as in the sentences:

"I accept your gift."
"The student accepted the assignment with enthusiasm."

2. to 'except' is a preposition which means 'but', 'excluding', or 'not including', as in the sentences:

"The student read every chapter except for the one assigned for today."