is that the full question, or a true or false question?
Answer:
Capitalization Error
Explanation:
This sentence contians a capitalization error, because the word "doctor" should not be capitalized.
In the tense that is it being used, it is a common noun, therefore requires no capitalization.
If the sentence was Doctor John does not make house calls., then yes, it would be capitalized.
Answer:
potion to portion
Explanation:
'potion' is incorrect
'portion' (with an r) is the correct term
Answer: yes, he helped him to take revenge.
Explanation:
they both had the same idea in mind, to get revenge.