Choose the correct word  to complete the definitions of “braille” and “sign language”.
touch     mute     blind     body     facial
Braille is the special language devised for (1) people. It is a system of writing or printing in which combinations of tangible dots or points are used to represent letters, characters, etc., that are read by (2).
Sign language is the language devised for deaf and (3) people. It uses manual signs to convey meaning and involves simultaneously combining hand shapes, orientation and movement of the hands, arms or body, and (4) expressions to fluidly express a speaker's thoughts.