精选优质文档-倾情为你奉上高中动词不定式专题练习1. This company was the first _ portable radios as well as cassette tape recorders in the world.A. producing B. to produce C. having produced D. produced 2. The purpose of new technology is to make life easier, _it more difficult.A .not making B. not make C .not to make D. nor to make 3. Helen had to shout _above the sound of the music .A .making herself hear B. to make herself hearC. making herself heard D .to make hersel
