20. The report needs ______ carefully before submission.
(A) check
(B) to be checked
(C) check with
(D) checks
答案:登入後查看
統計: A(29), B(254), C(21), D(4), E(0) #3650622
統計: A(29), B(254), C(21), D(4), E(0) #3650622