Complete the following table using the words given below:
Must; mustn’t; can; can’t; have to; don’t have to; be allowed to; be not allowed to; should; shouldn’t; ought to; need; need nota)
a) it is necessary or important
b) it is okay/ permitted
c) it is a good idea (the correct thing to do)
d) it is not necessary
e) it is not okay/ it is prohibited
f) it is not a good idea (not the correct thing)