1) Advice.  a) He must do homework b) He could listen to music c) He should go to the doctor 2) Obligation.  a) I mustn't perform weekly maintenance b) I must perform weekly maintenance on the machine c) I must repair the machine if I want to 3) Prediction. a) I will travel with my family to Japan b) I shouldn't travel during the scholar year c) I could buy a plane ticket this month 4) Advice a) You don't have to plant trees  b) We should plant trees c) My mom won't plant trees 5) Prohibition a) We shouldn't waste water b) We mustn't waste water c) We should waste water 6) Prohibition a) Children must use real tools b) Children will use real tools c) Children mustn't use real tools 7) Possibility a) Susan won't study for the Science exam b) Susan might study for the Science exam c) Susan mustn't study for the Science exam 8) Obligation a) You must wear your seatbelt when you drive. b) You should wear your seatbelt when you drive. c) You might wear your seatbelt when you drive. 9) Advice a) You shouldn't eat too many candies b) You must eat a lot of candies c) You might eat a lot of candies  10) Possibility a) My brother should be a doctor b) My brother must be an engineer c) My brother could be an engineer 11) Prediction a) The ball will move if I flick it. b) The ball might move if I flick it. c) The ball is going to move if I flick it. 12) Prohibition a) We must eat in the metalworking workshop b) We mustn't eat in the metalworking workshop c) We should eat in the metalworking workshop 13) Future plan a) I am going to buy a toolbox next Sunday b) I must buy a toolbox next Sunday c) I should buy a toolbox next Sunday 14) Possibility a) My boss might change his car. b) My boss doesn't have to change his car. c) My boss must change his car. 15) Future plan a) Peter is going to your company tomorrow b) Peter might go to your company tomorrow c) Peter must go to your company tomorrow

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