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Intermediate English Grammar Step by Step

 

     UNIT 4 - The key
     HAVE TO, MUST, NEED NOT, CANNOT and SHOULD

 

Please notice that there may be other options to the ones provided in this key. Furthermore, a slash (/) has been used to include different alternatives.

1 a have to b has to c must d must e must / have to

2 a does not have to b need not / do not have to c need not / do not have to d do not have to / need not e do not have to / need not

3 a had to b did not have to c had to d did not have to e will have to

4 a must not b must not c must not d must not e must not

5 a must b should c should d must e must

6 a need not b need not c need not d need not e need not

7 a must, cannot b cannot c cannot, must d cannot e must

8 a had to b had to c need not d need not / do not have to e had to f must not g had to h had to i must j cannot k cannot, must l need not / do not have to m need not n will have to o need not / do not have to p must not q did not have to r must s must t should u has to v had to w must not x will have to / should y need not / do not have to z had to

Written by Miquel Molina i Diez
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