You _________ finish your homework before going out.

• You would rather finish your homework before going out.
• You can finish your homework before going out.
• You must finish your homework before going out.
• You should finish your homework before going out.

Answer explanation

The use of 'must' indicates a strong obligation to complete the homework first.

She _________ be very tired after working all night.

• She should be very tired after working all night.
• She must be very tired after working all night.
• She would rather be very tired after working all night.
• She can be very tired after working all night.

Answer explanation

Using 'must' expresses a logical conclusion based on evidence.

We _________ not talk during the exam.

• We should not talk during the exam.
• We would rather not talk during the exam.
• We must not talk during the exam.
• We can not talk during the exam.

Answer explanation

'Must not' shows a prohibition.

_________ you wear a helmet when riding a bike?

• Could you wear a helmet when riding a bike?
• Did you wear a helmet when riding a bike?
• Don't you wear a helmet when riding a bike?
• Must you wear a helmet when riding a bike?

Answer explanation

Asking about a strong obligation.

He _________ follow the rules, or he will be punished.

• He can follow the rules, or he will be punished.
• He would rather follow the rules, or he will be punished.
• He should follow the rules, or he will be punished.
• He must follow the rules, or he will be punished.

Answer explanation

'Must' emphasizes the necessity to follow the rules.

They _________ not forget to lock the doors when they leave.

• They should not forget to lock the doors when they leave.
• They must not forget to lock the doors when they leave.
• They would rather not forget to lock the doors when they leave.
• They can not forget to lock the doors when they leave.

Answer explanation

'Must not' prohibits forgetting to lock the doors.

_________ we clean up after the party?

• Could we clean up after the party?
• Can we clean up after the party?
• May we clean up after the party?
• Must we clean up after the party?

Answer explanation

Asking about an obligation or necessity.

Everyone _________ respect the school’s regulations.

• Everyone can respect the school’s regulations.
• Everyone would rather respect the school’s regulations.
• Everyone should respect the school’s regulations.
• Everyone must respect the school’s regulations.

Answer explanation

Strong obligation to respect rules.

You _________ not eat in the library; it’s against the rules.

• You can not eat in the library; it’s against the rules.
• You should not eat in the library; it’s against the rules.
• You would rather not eat in the library; it’s against the rules.
• You must not eat in the library; it’s against the rules.

Answer explanation

'Must not' clearly shows prohibition.

_________ I bring anything for the picnic tomorrow?

• May I bring anything for the picnic tomorrow?
• Can I bring anything for the picnic tomorrow?
• Would I bring anything for the picnic tomorrow?
• Must I bring anything for the picnic tomorrow?

Answer explanation

Asking about a requirement.