1) You ......................................touch a hot oven. a) must b) mustn't 2) He has got a toothache. He .....................................go to the dentist. a) should b) shouldn't 3) You ..................................play with the fire. a) must b) mustn't 4) He should .............................hard because he has an exam. a) study b) studies c) studied d) studying 5) You must .................................... your room. a) clean b) cleans c) cleaned d) cleaning

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