[ Vocabulary and Grammar ]
Select the opposite of ‘mandatory’:
A. Required
B. Optional
C. Compulsory
D. Obligatory
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Grammar › ViewRussia can be one of the most beautiful and exciting travel ______.
A. holidays
B. accommodation
C. destinations
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She _____ a book every evening.
A. read
B. reads
C. has read
D. is reading
Grammar › ViewI have …………………..book
A. a
B. an
C. some
D. any
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You ____ to write them today.
A. should
B. must
C. had
D. ought