If children don't eat well, then they (not / can) be healthy.
cannot
If people eat too much, then they (must) be fat.
must
If I speak to Peggy, then she (can) get angry.
can
If Pug asks you to a party, then you (must) bring a present.
must
If he has time, then he (must) watch TV.
must
If teacher asks Jenny a question, then she (must) answer it.
must
If it rains, then Jenny (can) be sad.
can
If Tom's grandmother asks for help, then he (must) help her.
must
If Harry doesn't clean his room, then his mother (can) be angry.
can
If you touch fire, then you (can) get burned.
can
If there is a gun, then it (can) shoot.
can
If you forget an umbrella, then you (must) get wet.
must
If he breaks a pencil, then he (not / can) write.
cannot
If Tom doesn't eat, then he (can) feel hungry.
can
If you bring bad mark, then you (must) wash the dishes.
must
If Boo comes home early, then he (must) walk the dog.
must
If you know the word, then you (can) spell it.
can
If they come to a sea, then they (can) swim in it.
can
If you have lemons, then you (can) make lemonade.
can
If baby cries, then he (must) be hungry.
must