阿摩線上測驗
104.
Most people underestimate the amount of time and resources _____ for research and
development in the pharmaceutical industry.
(A)require
(B)requires
(C)required
(D)requirements
答案：登入後查看
統計： A(47), B(17), C(155), D(39), E(0) #3084363
統計： A(47), B(17), C(155), D(39), E(0) #3084363
