Deduction & Speculation exercises — Set 1: Must & Can't: Present Deduction Exercises (Worksheet)
Worksheet • 20 questions • 12 min
Sarah has been studying all day without a break. She very tired.
James always gets the highest marks in every exam. He very intelligent.
It's 3 a.m. and all the lights are off in the house. Everyone asleep.
Maria always wears designer clothes and drives a luxury car. She very wealthy.
He speaks five languages fluently. He love learning languages.
That restaurant is always empty. The food very good.
He says he's a professional chef, but he can't even boil an egg. He a real chef.
Emma only started learning English last month. She fluent yet.
David says he's 25, but he has grey hair and deep wrinkles. He only 25.
I sent her an email an hour ago, but she hasn't replied. She very busy today.
There's a light on in the office at midnight. Someone still in the building.
The shop is closed and all the shutters are down. They open today.
This coat only costs £5. It real leather — that's far too cheap.
Tom knows everything about this company — the history, the products, every employee's name. He work here.
You wear a seatbelt when driving. It's the law.
Jack has a very red face after his presentation. He feel embarrassed.
All students submit their essays by Friday. It's the deadline.
The neighbours' car isn't in the driveway. They at home right now.
Sophie runs 10 kilometres every morning before work. She extremely fit.
He's smiling, laughing, and telling jokes. He unhappy about the news.
Deduction & Speculation exercises online (Worksheet)
Practise using must and can't to make strong deductions about the present. Learn to draw logical conclusions from evidence — use must when you are almost certain something is true, and can't when you are almost certain something is NOT true. Also learn to tell the difference between must for deduction and must for obligation.