[ Vocabulary and Grammar ]
Select the opposite of ‘mandatory’:
A. Required
B. Optional
C. Compulsory
D. Obligatory

Random Topics:
Ed and Ing EndingsIrregular AdjectivesConnectorsAdverbs and Time ExpressionsSimple TenseVerbs with Prepositions and ConjunctionsPerfect Progressive TensesFrequency AdverbsCommasWish SentenceOther quiz:
Past Simple Tense › ViewI (be)………………………………… a student 2 years ago.
A. was
B. am
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First Conditional, Future Time Clauses › View
I will buy you some souvenirs ….. I am in New York next Monday.
A. before
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A. a
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Grammar › View
You ____ to write them today.
A. should
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