— Has Tom already finished his new story?

一 I have no idea. He _____ it last month. [ ]

A. had written

B. was writing

C. would write

D. wrote

我国的《公路沥青路面再生技术规范》建议水泥等活性填料一般不超过（）

A.1%

B.1.5%

C.2%

D.2.5%