[ Modals ]
If you have to do something, then it is…
A. necessary
B. obligatory
C. unnecessary
D. optional

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Grammar (Adverbs, Prepositions, Prepositional Phrases)Past Simple, Present Perfect TenseApologizingRelative ClausesGrammar - Verb FormsSentence Fragments and Complete SentencesSuperlative AdjectivesPreposition and ConjunctionAuxiliary and Modal VerbsPresent Simple PassiveOther quiz:
Grammar › ViewChimpanzees,——————— are intelligent animals, are sometimes playful and noisy.
A. what
B. who
C. which
D. that
Prepositions of Time and Place › View
She is going to wait for you ___ the traffic lights.
A. in
B. on
C. at