In Europe, a definite system of locating the annual cuttings __________ in the management of communal and government forests because under this system the forests can be so organized that an approximately equal yield is secured each year.
A. is extensively used
B. extensively uses
C. has extensively used
D. will have extensively used
Answer:A
In Europe, a definite system of locating the annual cuttings __________ in the management of communal and government forests because under this system the forests can be so organized that an approximately equal yield is secured each year.
A. is extensively used B. extensively uses C. has extensively used D. will have extensively used