1. children ... chat with strangers on messenger.
a. should b. shouldn't
2. students ... talk while the teacher is lecturing.
a.should b.shouldn't
3. women ... wear a dress when they go to temples
a.should b.shouldn't
4. you ... eat one apple a day.
a.should b.shouldn't
5. you ... learn English well if you want to study abroad.
a.should b.shouldn't
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