阿摩線上測驗
18. The key players in the energy market, ____________ heavy capital investment, have little interest in innovation.
(A)which to require
(B)requiring
(C)which it requires
(D)required
答案：登入後查看
統計： A(24), B(245), C(41), D(58), E(0) #537079
統計： A(24), B(245), C(41), D(58), E(0) #537079
