[ Modal Verbs - Obligation ]
It’s not obligatory to take a tie. You …………. wear one.
A. must
B. mustn’t
C. don’t have to
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The Structural Types of SentencesVerb FormsSubject Verb Agreement and Coordinating ConjunctionsGRAMMAR - Could / Could notGrammar TOEFLPresent and Future TensesPast Perfect or Past Perfect ContinuousVerb Moods and Vague PronounsHave to/Has toPresent, Past, and Future TimeOther quiz:
Vocabulary › ViewThese are words that have opposite meanings.
A. synonyms
B. antonyms
C. similes
D. metaphors
Conjunctions › View
The hospital was crowded _______ the virus.
A. Because
B. since
C. because of
D. so
Grammar › ViewWhy ……….. Nam want to go to the post office? Because he wants to send a letter.
A. are
B. does
C. do
D. is
Prepositions › View
I shall be back ……about twenty minutes times.
A. In
B. At
C. By
D. From