Speculation and deduction: Modal verbs and expressions — Exercise 1

1She hasn’t replied to any messages today. She — choose —must bemight becan’t be busy with work.

2The lights are off and the door is locked. They — choose —might bemust becan’t be at home.

3He looks exhausted. He — choose —must have workedmight workcan’t work all night.

4She’s not answering her phone. She — choose —must have sleptmight be sleepingcan’t sleep right now.

5They arrived very early. They — choose —can’t leavemight leavemust have left home before sunrise.

6He didn’t come to the meeting. He — choose —must be sickmight have forgottencan’t forget about it.

7She knows the answer immediately. She — choose —might studymust have studiedcan’t study very hard.

8The baby is crying loudly. She — choose —must be hungrymight have been hungrycan’t be hungry .

9He isn’t at his desk. He — choose —must workmight have gonecan’t go to lunch.

10She failed the exam. She — choose —must studycan’t have studiedmight study enough.