Question

Choose the word or phrase that best completes the sentence.
You're 18! You're _________ to be able to look after yourself by now.

a) have
b) ought
c) should
d) supposed

Answer 1

Hint: A word is a unit of language that its speakers can identify. For example- sing, pray, tell. A phrase, on the other hand, refers to an expression consisting of one or more words forming a grammatical constituent of a sentence. For example- to fall flat.

Complete answer:
In the given question, the word in the blank must indicate that the subject of the sentence has a responsibility to look after himself/herself, and not an order to do so.
Let us thus analyze the options given to us in this question:
Option (a.), 'have', refers to an obligation or duty that is mandatory to an extent.
Therefore, option (a.) is incorrect.

Option (b.), ‘ought', refers to an auxiliary verb that is indicating duty or obligation.
Therefore, option (b.) is incorrect.

Option (c.), ‘should', refers to being obliged to; have an obligation to; ought to; it indicates that the subject of the sentence has some obligation to execute the sentence predicate.
Therefore, option (c.) is incorrect as ‘should’ is also not followed by ‘to’ since it is a modal verb.

Option (d.), ‘supposed', refers to ‘required’; ‘a responsibility’.
Therefore, option (d.) is correct as it correctly shows that the subject of the sentence has a responsibility to look after himself/herself, and not an order to do so.

Note:In this question, remember that some of the options are modals.
A modal verb is an auxiliary verb (such as `can' or `will') that is used to express modality.
Also, keep in mind that not all verbs have an ‘are’ or ‘to’ before and after them.