I haven`t got any letter from my brother for a year. Do you ____ how worried I am now?A.have any idea B.think of 为什么选A那B为什么不对呢

I haven`t got any letter from my brother for a year. Do you ____ how worried I am now?A.have any idea B.think of 为什么选A那B为什么不对呢
I haven`t got any letter from my brother for a year. Do you ____ how worried I am now?
A.have any idea B.think of
为什么选A
那B为什么不对呢

I haven`t got any letter from my brother for a year. Do you ____ how worried I am now?A.have any idea B.think of 为什么选A那B为什么不对呢
think of 是考虑之意 不合语境 have any idea ＝know 符合语境

同意楼上的，比如I don't know.=I have no idea.

.have any idea ＝know