Question

Fill in the blank with the appropriate verb.
According to the school rules, every student _____ attend the morning assembly.
a- might
b- must
c- can
d- would

Answer 1

Hint: Modal verbs refer to those verbs or words that are used to indicate potentiality, probability, or necessity. For example- Might, will, would, can, etc.

Complete answer:
Let’s look at the functions of different modal verbs-
1) Might- ‘Might’ is the past tense of ‘may’. It is used to indicate the probability of action in the past tense or indirect speech. For example- He might have given you the wrong sheet.
2) Must- It is used to indicate that someone is required or compelled to do something. For example- You must pray daily.
3) Can- ‘Can’ is a modal verb that is used to indicate the capability or potentiality of a person to do something. For example- I can show you my dancing skills.
4) Would- ‘Would’ is the past tense of ‘will’. It is used to indicate promises or offers made in the past. For example- I would have done it for you.
In the given question- We can conclude that according to the school rules, every student must attend the morning assembly. Here, we have used ‘must’ because it is necessary or obligatory to do so.
Now, let’s examine the given options-
Option a- ‘might’ is an incorrect option because we are not talking about the possibility of something.
Option b- ‘must’ is the correct option because the students are required or demanded to attend the assembly.
Option c- ‘can’ is an incorrect option because we are not talking about the ability or potentiality of something.
Option d- ‘would’ is an incorrect option because we are not talking about the past. The correct answer is Option ‘b’.

Note:
 Keep in mind, ‘must’ is generally used for giving orders and commands. Also, we only use ‘must’ for present and future references.