Question

1. We ______ to follow the traffic rules. (ought /should/must)​

Answer 1

Answer:

We must to follow the traffic rules.

(ought /should/must)

Answer 2

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We ought to follow the traffic rules.

Extra Information :

'Ought to' is a semi-modal verb because it is in some ways like a modal verb and in some ways like a main verb. For example, unlike modal verbs, it is followed by to, but like modal verbs, it does not change form for person.