1) She is coughing a lot. She ___ see a doctor. a) must b) should c) could d) should have 2) You ___ wear a helmet when you ride a motorcycle. It's the law. a) must b) should c) must have d) could 3) If you want, we ___ go to the movies today. a) should b) could c) should have d) could have 4) He has a test tomorrow. He ___ study tonight. a) could b) must have c) must d) should 5) This road is dangerous. You ___ drive carefully. a) must have b) should have c) could have d) must 6) You ___ studied more for the exam. It was very difficult. a) must have b) could c) should have d) mist have 7) I’m free this afternoon, so I ___ help you with your homework. a) must b) most c) cuold d) could 8) I can’t find my wallet. I ___ left it in the car. a) must have b) could have c) should have d) most have 9) He ___ taken the wrong train. That’s why he is late. a) could have b) should c) must have d) must 10) She ___ called me. I was awake all night. a) must b) could have c) should d) could 11) They ___ arrived earlier, but they decided to wait. a) should have b) could have c) must have d) must has 12) We ___ told you the truth from the beginning. We are sorry. a) could b) shouid have  c) must d) should have

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