某Excel工作表如下所示，若在D1单元格中输入=$A$1+$B$1+C1，则D1的值为（1）；此时，如果向垂直方向拖动填充柄至D3单元格，则D2和D3的值分别为（2）。

空白（2）处应选择（）

A.79和99

B.69和93

C.64和60

D.79和93

Lack government support, they had to approach sponsors, organizers, and musicians on their own—at first, she claims, in her country.

A．Lacks

B．Lacked

C．Lacking

D．A lack of