問題詳情
【題組】73．After Mary got well from her illness they began _____.
(A) to study industrial management
(B) to buy and read more mystery books
(C) to do market research on book business
(D) to work harder to save money for the bookstore
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)