You ......................... have taken your expensive watch on a camping holiday. It was very risky.
shouldn't
When the police arrest someone, they ............................. to spend a lot of time filling in forms.
have/need
Rewrite the following sentence: "Is it OK if I take a picture of your notes?" .............. I take a picture of your notes?
can, could, may, might
Rewrite the following sentence: "It was a mistake to leave my valuables in the hotel room". I ...........................my valuables in the hotel room.
shouldn't have left
The thief knew the secret code. It ....................... have been someone who works here.
must
3 modals expressing "possibility"
may, might and could
I'm sure he ......................... be at home. He leaves work at 5 and it's 4 o'clock.
can't/cannot
The police ................................ find any evidence (NOT BE ABLE TO in the past)
weren't able to
The past of the modal verb "can" is ...
could
We had .................. check that the doors are locked before we go out.
better
Rewrite the following sentence: "It's possible that they forgot to turn on the alarm". They ...................to turn on the alarm.
may/might/could have forgotten
Rewrite the following sentence: "We were ordered to empty our pockets before we could go into the concert". We ........................ to empty our ....
had
2 modals expressing "ability" in the present
can, be able to (is, are, am able to)
Rewrite the following sentence: "It's certain that the thieves knew where the jewellery was". They ....................................... where the jewellery was.
must have known
3 modals expressing "advice"
should, ought to and had better
4 modal verbs to ask for permission
can, could, may, might
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