2.The number of the people, who walk the dog outdoors, ___h_a_s__ri_s_e_n___ (rise) sharply in the past few years. 3.(2019·全国卷Ⅲ)When a student attacks a professor on the social media, the language used ___a_c_t_u_a_l_ly___ (actual) says more about the s...