THE CORALS CAN BE DIVIDED INTO THREE GROUPS, TWO OF WHICH ……… EXTI...
96. The corals can be divided into three groups, two of which ……… extinct.
a. is
b. are
c. was
d. were
b
96. The corals can be divided into three groups, two of which ……… extinct.
a. is
b. are
c. was
d. were
b