Complete the sentence
_____ you hold the door open for me, please? (polite request)
Can/could
We ____ take action to achieve equality. (obligation)
have to/need to/must/should
Before he got glasses, he _____ see well. (inability in the past)
couldn't
It _____ be a challenge to cope with a disability. (logial conclusion)
must
You ____ have extra time to do the test. (permission)
can/may
Paul has difficulty walking. He _____ be serious about doing a hike. (certainty that something is not true)
can't
I wonder if Pau has heard the news. They ____ (tell) him yet. (- MODAL PERFECT)
couldn't have told/might not have told
My mum could have taken us. We ____ (go) by bus. (- MODAL PERFECT)
needn't have gone
The laptops our school bought are high quality. They ____ (cost) a lot of money. (MODAL PERFECT)
must have cost
would have asked/could have asked
Out town lacks accessible playgrounds. It ____ (be) frustrating for disabled children.
must be
Why did you use that bright blue background? You ____ (use) white instead. (MODAL PERFECT)
should have used
The website says the hotel is not accessible. They ____ (build) a ramp. (MODAL PERFECT)
must have built
Cindy didn't answer her phone. She ____ (hear) it. (MODAL PERFECT)
couldn't have heard
We didn't know that you wanted an interpreter. You ___ (tell) us in advance. (MODAL PERFECT)
should have told/ought to have told