Question

Fill in the blank choosing suitable modal from bracket:
(may, should, will, can)
Students _________ attend the classes if they want to appear in the examination.

Answer 1

The main use of 'should' is to tell somebody what they ought to do, to give advice, or to add emphasis to something. According to the given context 'should' is the correct answer because it makes grammatical and logical sense when used in the sentence.

'May' is used to give permissions, make requests or to express the possibility of something happening; 'will' is used to make requests, give instructions or advice or to make an offer. Neither of these usages would fit in the sentence and hence both are incorrect answers.

'Can' is incorrect because it is used to express the ability or opportunity, to request or offer permission, and to show possibility or impossibility. This usage of the modal verb does not go with the given context.