The water is too dangerous. We can/can't go kayaking here.
Can't
We can/can't stay at this campsite. It's closed.
Can't
The canyon is beautiful. We should/shouldn't go hiking there.
Should
Make a sentence with "should" and "homework"
...
Make a sentence with "can" and "play sports for 2 hours"
...
We should/shouldn't go hiking today. It is raining very hard.
Shouldn't
You can/can't cross the street when the light is red.
Can't
You can/should brush your teeth two times a day to keep your them healthy.
Should
Make a sentence with "can" and "swim"
...
Make a sentence with "should" and "the park". It is raining outside.
You shouldn't go to the park.
You can/should go to bed early.
Should
The sky is dark. It should/can rain soon.
Can
I can/can't swim in the pool, but I can/can't swim in the sea.
Can and can't
The bus comes in five minutes. We can/can't go back to the campsite.
Can
We should/shouldn't take the bus. It's too slow. Let's go by train.
Shouldn't
Make a sentence with "can't" and "fly"
...