企业自采物资招标,可以由下面哪些操作主体进行招标组织和开评标操作()。
A.企业
B.国事
C.招标中心
D.业务处室
E.直属机构
参考答案:A, B, C
Lucy has been to _________ many times this year.
A. his uncle b. her uncles C. uncle’s D. her uncle’s
While she _______ , she cut herself.
A.was cooking
B.cooked
C.had cooked
D.cooks