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We use must and have to talk about obligation Have to is generally much more common than must The meaning of must and have to is similar in positive sentences However, the negative forms mustn't and don't have to have very different uses Master the difference with Lingolia then put your knowledge to the test in the free exercises(What do you think?) Do I have to wear this tie?Have to Level Intermediate ANSWER KEY My Notes 1 don't have to 2 Does / have to 3 has to 4 have to 5 have to / do 6 doesn't have to 7 has to 8 have to 9 Do / have to 10 has to 11 don't have to 12 has to 13 have to 14 Does / does 15 have to Grades as percentages 15 / 15 = 100% 14 / 15 = 93 13 / 15 = 87 12 / 15 = 80 11 / 15 = 73 Test English Prepare For Your English Exam Have to must exercises online

A chemistry experiment demonstrates how to tell the difference between heterogeneous mixtures and homogeneous mixtures using a flashlightIn this animated lecture, I will teach you the concept of mixture, different types of mixture, homogeneous mixture, heterogeneous mixture, difference between Examples of a heterogeneous mixture Colloid A colloid is an example of a heterogeneous mixture where the components exist in two distinct phases; 1 What a heterogeneous mixture example