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Answer is C: Should.

This is because the father is assumption and recommend the thought that her son is in the

house.

2. I think your thumb is broken. You ___ go to the emergency room.
a. Might b. could c. ought to d. can

Answer is C: Ought to.

This is because it’s a formal recommendation that the person should seek for the medical

assist as soon as possible.

Double concept Modal

The model verbs have more than one meaning and usage.

Example Meaning Modal Meaning Example

May I go to toilet? Permission May Good We may go to hiking
possibility next week.

I must get this done Responsibility Must Assumption She hasn’t come. She
by today. must be sick.

When I was young, I Past (used to) Would Present I would buy the house

would play soccer. unreal but it’s too expensive

Shall I follow her? Educated Shall Contractual The school will end the

expression obligation academic session by this
offer July.

I could go if I have Unreal ability Could Past ability She could play piano

time. before but now not
anymore.