Possibility (may/might/could) Exercises PDFSet 2: Could for Possibility: May, Might, Could & Can't
20 questions·14 min·Answers included·Explanations included
Preview: Questions
Fill in the blank with the correct option.
1.A: Where is the cat? B: I'm not sure. It ___ be hiding under the bed.
a) couldb) mustc) willd) shall
2.That story ___ be true, but I find it hard to believe.
a) willb) mustc) couldd) shall
3.She has been coughing all morning. She ___ have a cold.
a) mightb) willc) shalld) needs
4.Don't eat those mushrooms! They ___ be poisonous.
a) willb) mustc) shalld) could
5.He's only three years old. He ___ read yet.
a) might notb) may notc) can'td) shouldn't
... and 15 more questions in the PDF
Preview: Answers
1.could
2.could
3.might
4.could
5.can't
... and 15 more answers in the PDF
Preview: Explanations
1."could"(a)
'Could be' expresses a possibility — it's one of several possible places the cat might be. 'Must be' would show near-certainty.
2."could"(c)
'Could be true' means it is possible, though the speaker has doubts. 'Must be true' would mean the speaker is almost certain.
3."might"(a)
Both 'might' and 'could' work for possibility here. 'Might' is used when guessing based on evidence. 'Will' would be too certain.
4."could"(d)
'Could be poisonous' warns about a dangerous possibility. The speaker is not sure, but wants to be cautious.
5."can't"(c)
'Can't' here means he is not able to read — it's about ability, not possibility. A three-year-old does not have the ability to read.
... and 15 more explanations in the PDF
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