had to - I ______________ stay up late last night to finish my project., can't - You ______________park your car here; it's a no-parking zone., have to - You ____________update your robot’s software to keep it safe., needn't - This robot ____________ be connected to the internet all the time., might - In the future, robots ___________ be used to teach children in schools.,

Complete the following sentences with the appropriate modal verb.

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