MODAL VERBS REVISION

ANSWER KEY Exercise 1 1   has to; doesn’t have to 2   had to; didn’t have to 3   ’ll have to 4   don’t have to 5   will … have to Exercise 2 1 e 2 a 3 c 4 f 5 d 6 b Exercise 3 1   √ Can you swim? 2   √ She must work harder. 3   √ I can’t understand you. 4   √ You must go now. 5   √ Do you have to work on Saturdays? 6   √ When I was young, I had to work          hard. Exercise 4 1   both 2   a – don’t have to 3   both 4   a – mustn’t. 5   b – can’t 6   b – have to 7   a – must 8   a – has to 9   both 10 both Exercise 5 1 c 2 a 3 e 4 b 5 d Exercise 6 1   Yes 2 No 3 Yes 4 No 5 Yes