Meaning: focus all one's attention on a particular object or activity.

(a)  

Meaning : reread work done previously to improve one's knowledge of a subject, typically to prepare for an examination.

(a)  

Meaning: To record important details of what one hears or sees (by writing or typing them) in order to study or reference them later.

(a)  

Meaning: say again something one has already said.

(a)  

Meaning: examine (something) in order to determine its accuracy, quality, or condition, or to detect the presence of something.

(a)  

Meaning: perceive the intended meaning of (words, a language, or a speaker)

(a)  

Meaning: interrogate, query, inquire mean to address a person in order to gain information

(a)  

Meaning: give one's attention to a sound

(a)  

Meaning: be aware of through observation, inquiry, or information

(a)