I pulled the handle________ I could.

I pulled the handle________ I could.
A、so hardly as
B、as hardly as
C、so hard as
D、as hard as
【正确答案】：D
【题目解析】：as hard as 为正确选项.​hard 是用力,使劲的意思,是副词；hardly 是几乎不；as hard as I could 是我尽力.