Complete the paragraph given below by filling in the blanks choosing the correct option from those that follow-
Elephants (a) _____ the largest land mammals. Three species of elephants (b) _____ living today. Elephants (c) ________other Elephantidae were once classified with other thick skinned . The elephant’s gestation period is 22 months, (d) _________ longest for any land animal.
A. is
B. are
C. was
D. were