Multiple choice

Directions: Fill in the blank with the appropriate word/phrase.

If they want to succeed, they ______ have to work very hard.

  1. will

  2. ought

  3. must

  4. should
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is a first conditional sentence structure (If + present simple, will + base verb). 'Will' expresses the certain consequence or requirement for the future. While 'must' or 'should' convey necessity, 'will' is the standard auxiliary for the result clause in this conditional type.

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