Share Gr. 4 Obligation & Prohibition
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To save ocean resources, we ________ stop ocean pollution
To save ocean resources, we have to / must stop ocean pollution
We _____ throw bottles and cans into our oceans and rivers.
We can't throw bottles and cans into our oceans and rivers.
______ leave garbage on the beach!
Don't leave garbage on the beach!
What type of sentence is this? "Please don't leave trash or food in the class"
It's prohibition
What type of sentence is this? "We have to open the camera during the lesson"
It's obligation
We _____ plant many trees and plants to reduce global warming.
We have to / must plant many trees and plants to reduce global warming.
We ______ have healthy plants and trees if we pollute the air.
We can't have healthy plants and trees if we pollute the air.
To save trees, we ______ protect the forests.
To save trees, we have to / must protect the forests.
To keep parks clean, we _______ pick up our food after a picnic.
To keep parks clean, we have to / must pick up our food after a picnic.
_______ take off your mask when you go out!
Don't take off your mask when you go out!
You ______ leave the class if you haven't finished your task.
You can't leave the class if you haven't finished your task.
