Question

Your health is deteriorating day by day, you ___ better see a doctor. (did, would, should, had)​

Answer 1

The blank can be filled as follows:

Your health is deteriorating day by day, you should better see a doctor.

• For English Grammatical sentences, we can determine what the correct word will be to fill in a blank by looking at the sentence structure.
• We use the word' should' in a sentence to represent what is the best thing that can be done or when something must be done by someone.
• As seeing a doctor is the best thing to do when health is deteriorating hence 'should' will be the correct word to fill in the blank.

Answer 2

Answer :

• Should

Given :

• Your health is deteriorating day by day, you ___ better see a doctor. (did, would, should, had)

Answer :

• Your health is deteriorating day by day , you should better see a doctor

More Explanation :

• Should is an auxiliary verbAnd also we can say that modal auxiliary verbIt used to commonly to make recommendations or give adviceIt is also used to express obligation
• A verb form that changes the meaning of the main verb.
• The modal auxiliaries are "may, might, can, could, should, and would."