[ 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:
Grammar › ViewI have …………………..book
A. a
B. an
C. some
D. any
Grammar › View
You ____ to write them today.
A. should
B. must
C. had
D. ought
