Obligation & Necessity (must/have to) Exercises PDFSet 3: Have To in All Tenses & Need To Exercises
20 questions·14 min·Answers included·Explanations included
Preview: Questions
Fill in the blank with the correct option.
1.I ___ wait for two hours at the airport yesterday because my flight was delayed.
a) had tob) mustc) have tod) was must
2.You ___ get a visa before you travel to that country next month.
a) must tob) will have toc) will mustd) are having to
3.She ___ work late three times this week already.
a) mustb) had toc) has had tod) has must
4.When I was a child, I ___ share a bedroom with my brother.
a) mustb) have toc) was have tod) had to
5.You ___ worry about the exam. You've studied really hard.
a) needn'tb) mustn'tc) haven't tod) don't must
... and 15 more questions in the PDF
Preview: Answers
1.had to
2.will have to
3.has had to
4.had to
5.needn't
... and 15 more answers in the PDF
Preview: Explanations
1."had to"(a)
'Must' has no past form. Use 'had to' for past obligation. The speaker was forced to wait because of the delay.
2."will have to"(b)
'Must' has no future form. Use 'will have to' for future obligation. 'Will must' does not exist in English.
3."has had to"(c)
Use 'has had to' (present perfect of 'have to') to describe an obligation that has happened repeatedly up to now. 'This week already' signals present perfect.
4."had to"(d)
Use 'had to' for past obligations. 'When I was a child' clearly signals the past tense.
5."needn't"(a)
'Needn't' means 'it is not necessary'. The speaker is reassuring the listener that worrying is unnecessary. Note: 'mustn't' would mean 'you are forbidden to worry', which doesn't make sense here.
... and 15 more explanations in the PDF
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