Modal Verbs for Certainty, Probability & Possibility

Identify the level of certainty in the following statement: 'She must be at home by now.'

• Uncertain

• Low

• High

• Medium

Determine the probability in the scenario: 'It is raining heavily, what is the probability of a flood occurring?'

• The probability is 99.9%

• The probability is about 50%

• The probability is 0%

• The probability cannot be determined without more specific information.

Use a modal verb to show certainty in the sentence: 'He __ have finished his homework by now.'

• must

• can

• should

• will

Discuss the likelihood of winning the lottery in a given scenario.

• The likelihood of winning the lottery in a given scenario is very slim.

• There is an equal chance for everyone to win the lottery in a given scenario

• The likelihood of winning the lottery in a given scenario is guaranteed

• Winning the lottery in a given scenario is highly probable

Identify the level of certainty in the statement: 'They will definitely come to the party.'

• Uncertain

• High

• Low

• Medium

Determine the probability in the scenario: 'There are dark clouds in the sky, what is the probability of rain?'

• About 40%

• 99.9%

• 0%

• About 50%

Use a modal verb to show certainty in the sentence: 'She __ have forgotten her keys at home.'

• could

• might

• must

• shall

Discuss the likelihood of passing a test without studying in a given scenario.

• Extremely high

• Moderate

• High

• Very low

Express the possibility using a modal verb(s) in the sentence: 'They __ win the competition.'

• can

• shall

• might / may / could

• will

Use a modal verb to show certainty in the sentence: 'I __ finish the project on time.'

• might

• can

• have

• will