81. ...
transmission.
soil at one time.
c. That is
studied
a. that they move
occasions for
a. as copper
b. they move
congratulations.
b. than copper
d. That the
a. Birthdays that
studies of ant
c. for copper
c. where they move
usually considered
d. which they move
d. more copper
life
--> b
--> a
--> c
b. Usually
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