SENTENCE PHRASE

I don't know what to
"I don't know what to do."
"I don't know what to do with mylife."
"I don't know what to do with myself."
"I don't know what to say."
"I don't know what to give."
"I don't know what to tell."
"I don't know what to search."

I don't know how to
I don't know how to put the meaning into sentence.
I don't know how to  tell them that i am unable to come.
I don't know how to explain the concept to them.
I don't know how to narrate the story to students.
I don't know how to dance with barefootedly.
I don't know how to ride a bike.

I don't know where to

I was about to

Believe it or not