YOU___see a doctor if you have a headache

YOU___see a doctor if you have a headache
YOU___see a doctor if you have a headache A.may B.need C.should Dcan't Aunt Li often asks her son___food.It is bad for his health.A.don't eat too much B.not eat too much C.not to eat too much D.not to eat much too Could you please___your room,Tom?_____ A.cleaning:No problem B.clean:Certainly C.to clean:Of course D.clean:No,I couldn't