Answer:
Mr Brownlow is very handsome
The answer to the question is called "homophones". These words have same pronunciation, but different spellings.
A progressive form of a verb is formed with the ending "-in": the only verb form in the options that is formed with the ending "ing" is in option b.
The correct option is b: will have been falling. This tense is the future perfect progressive tense.
I think it would be isolated