14. A combination of imagination and determination _______Prof. Nathan _______ entirely new lines of research concerned with the
way wild animals survive extreme environment conditions under COVID-19.
(A) will allow, to be developing
(B) allow, developing
(C) were allowed, to have developed
(D) allowed, to develop
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統計: A(5), B(7), C(15), D(89), E(0) #2849413
統計: A(5), B(7), C(15), D(89), E(0) #2849413