81. Please take a moment to review the provided materials to find out how .....you share information.
(A) effect
(B)effective
(C)effectively
(D)effectiveness
79.The new ventilation system is expected to provide a better job of...fresh air to get into thewhole building.
(A) allowing
(B)allow
(C)allowance
(D)allowable
65.In the last two years,there has been enormousi....n Internet advemtising
(C)grown
(D)grower
(A)grows
(B)growth