Obligations and Necessity

What is the correct usage of 'must' in the following sentence: 'You ____ wear a helmet while riding a bike.'

• can

• might

• must

• should

Fill in the blank with the appropriate modal verb: 'I ____ finish my homework before I can go out to play.'

• can't

• should

• might

• must

Which modal verb is used to express prohibition in the following sentence: 'You ____ enter this area without permission.'

• must not

• can

• should not

• might not

Choose the correct modal verb to complete the sentence: 'We ____ be at the airport by 8:00 AM for the flight.'

• should

• might

• can

• must

In which sentence is 'have to' used to express necessity: a) 'I ____ go to the dentist tomorrow.' b) 'You ____ eat your vegetables.'

• d) 'We ____ going to the beach this weekend.'

• c) 'She ____ watching TV all day.'

• a) 'I ____ want to go to the dentist tomorrow.'

• b) 'You ____ eat your vegetables.'

What is the correct usage of 'can't' in the following sentence: 'You ____ talk during the exam.'

• can

• can not

• can't

• cannot

Fill in the blank with the appropriate modal verb: 'She ____ study hard to pass the exam.'

• must

• can

• might

• should

Which modal verb is used to express obligation in the following sentence: 'You ____ submit your assignment by Friday.'

• must

• might

• should

• can

Choose the correct modal verb to complete the sentence: 'We ____ forget to buy milk on the way home.'

• might

• won't

• can

• should

In which sentence is 'must' used to express obligation: a) 'You ____ be quiet in the library.' b) 'I ____ finish this report today.'

• d) 'I might finish this report today.'

• b) 'I can finish this report today.'

• a) 'You must be quiet in the library.'

• c) 'You should be quiet in the library.'