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How to Use Must, Have to, and Need to in English - ThoughtCo
Need - Grammar - Cambridge Dictionary
Need to, have to, must - modals of necessity - YouTube
NEED | English meaning - Cambridge Dictionary
English Modal Verbs: Must, Have to, Need to | Langster
Need to -- Modal auxiliary verb — English Reservoir
"need to do" vs "need do" - English Language & Usage Stack Exchange
Need to, have to, must – modals of necessity · engVid
English Grammar Lesson: Need, Need to, Want, & Want to
Need to or need (modal) - English Language Learners Stack …