You are not____clever as you think you are.

Halves as

Half as

Much

Nonr the these

You are not half as clever as you think you are.

آپ اتنے ہوشیار نہیں ہیں جتنا آپ سوچتے ہیں

Half as is the best to keep the meaning of the original sentence.

Half as is a conjugate verb

SH4-8-2023