Answer keys of exercises of degrees of certainty – present time negative
I. Complete the sentences by giving your ‘best guess’
- She has got F for all the tests so far this semester.
She mustn’t study hard.
- I am calling my parents, but there is no answer.
They must not be at home.
- I have never seen him drink coffee.
He must not like coffee.
- She seems lonely and rarely goes out.
She must not have many friends.
- It is bed time, but our nephew is still watching cartoon.
He must not feel asleep.
II. Give reasons for conclusions.
- A: Someone is waving at you over there. It may be your mom.
B: It couldn’t my mom because she is going on her vacation.
- A: This is not my watch. I think it belongs to Jimmy.
B: It can’t belong to Jimmy because he doesn’t like watches.
- A: Someone told me they are divorced.
B: That can’t be true because I have just seen them hand in hand at the supermarket.
- A: I’ve just seen Mary ride a motorbike.
B: That couldn’t be right because she hates motorbikes.
- A: I have heard that Rob cooks very well.
B: This can’t be right because he always has fast food
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