A.depends
B.essential
C.discouraged
A. the child gets【T1】______
B. this【T2】______ on interaction
C. is【T3】______ to the growth
But speech has to be induced, and【T4】______ between the mother and the child, where the mother recognizes the signals in the child's babbling, grasping and smiling, and responds to them. Insensitivity of the mother to these signals dulls the interaction because【T5】______ and sends out only the obvious signals. Sensitivity to the child's non-verbal signals【T6】______ and development of language.