Deaf people are who that can’t bear but they are able to communicate 76. ______ quite well with a special language. It’s call sign language. The speaker 77. ______ of sign language use hand and gestures in order to communicate. 78. ______ Basic sign language has been used for a long time. And it wasn’t really 79. ______ developed until about 250 years ago. In the middle of 1700s, a 80. ______ Frenchman develop sign language. He developed a large number of 81. ______ words for sign language. We call them picture-image signs so the 82. ______ signs create vocabulary pictures. 83. ______ Abbs Sicard also developed sign language of other ways. He made 84. ______ complete roles to show the order of word in sentences and to show 85. ______ verb tenses.