(C2) ______
A. accelerating
B. strengthening
C. declining
D. fluctuating
(C11) ______
A. through
B. across
C. into
D. towards
(C18) ______
A. refutably
B. indispensably
C. inevitably
D. respectively
(C14) ______
A. Moreover
B. However'
C. Otherwise
D. Thus