1) You ..... do your homework. a) should b) shouldn't 2) You ...... eat fast food. a) should b) shouldn't 3) You ..... run in the classroom. a) should b) shouldn't 4) You ... eat fruits and vegetables. a) should b) shouldn't 5) Children .... go to bed early. a) should b) shouldn't 6) You ... fight with your friends. a) should b) shouldn't 7) You .... brush your teeth every night. a) should b) shouldn't 8) I can't sleep at night. a) You shouldn't drink coffee. b) You should drink coffee. 9) He has a toothache. a) He shouldn't go to the dentist. b) He should go to the dentist. 10) They want to get fit. a) They should exercise. b) They shouldn't exercise. 11) I feel sleepy. a) You shouldn't rest. b) You should rest. 12) We ... plant more trees. a) should b) shouldn't 13) We .... cut down trees. a) should b) shouldn't 14) We ... turn off the lights when we leave a room. a) should b) shouldn't 15) You ... wash your hands often. a) should b) shouldn't

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