The key to exercise solutions in chapter Unit 5 - Global issues for the textbook Performer B2 - Workbook with authors Marina Spiazzi, Marina Tavella, Margaret Layton from Zanichelli
Question
Rewrite the sentences using modal of deduction.
Answer
She can't have been one of the speakers.
They must have reached an agreement.
The fundraiser for migrant children can't be today.
There must be great solidarity in this community.
Cutting-edge filters could be a solution. / Cutting-edge filters may be a solution. / Cutting-edge filters might be a solution.