sentences:  Opportunities for social interactions among children as well as between children and adults are important for children to learn languages through exposure and practice.Speech motor learning is an important part of the linguistic development of infants as they learn to use their mouths to articulate the various speech sounds in language.Speech production requires feedforward and feedback control pathways, in which the feedforward pathway directly controls the movements of the articulators (namely the lips, teeth, tongue and the other speech organs).