Should : I agree with them that we … try again., The government … help people in need., We ... recycle our rubbish., We ... protect the environment., You ... learn foreign languages., If you want to sleep better, you … try drinking less coffee., You …. look through the peephole when someone rings the bell., Shouldn’t : You … drink so much coffee; it's bad for your blood pressure., You have a great job; you …. change it., Children ... watch TV all day long., You …… take too much medicine., You ……… move if you break your leg., You … open the door to strangers.,

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