Question 1
Build the sentence: _____
Options: calls, I must call my grandmother tonight.
Build Obligation Source and Time
Tap the words in the correct order to build each sentence. Contrast speaker-driven must with external have to, and use the correct agreement or past form. One word does not belong.
Practice 3 of 4
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Question 2
Build the sentence: _____
Options: We must leave now or we will miss the train., leaves
Question 3
Build the sentence: _____
Options: tries, You must try the soup; it is delicious.
Question 4
Build the sentence: _____
Options: I have to wear safety boots at work., wears
Question 5
Build the sentence: _____
Options: submits, Maya has to submit the form by Friday.
Question 6
Build the sentence: _____
Options: Employees have to scan their badges at the entrance., scanned
Question 7
Build the sentence: _____
Options: caught, The timetable means Leo has to catch the early bus.
Question 8
Build the sentence: _____
Options: Yesterday, I had to replace a flat tyre., replaced
Question 9
Build the sentence: _____
Options: turned, The storm closed the road, so we had to turn back.
Question 10
Build the sentence: _____
Options: Nora did not have to work last Saturday., had
Practise Build Obligation Source and Time with this interactive sentence-building exercise of 10 questions. Tap the words into the correct order to build each sentence, then submit to check your answers and get instant feedback on every sentence.
Practising grammar in real sentences — rather than memorising rules in isolation — is one of the most effective ways to make a structure stick. You can retry as many times as you like to build accuracy and confidence using Build Obligation Source and Time in everyday English.
Looking for more practice? See all exercises for this lesson.