句型转换9K.J*E,O'B)n3A:q8p8w.\,t.x8O
They’re having an English lesson. （改为否定句）9K.J*E,O'B)n3A:q8p8w.\,t.x8O
They )V0V/|8y4l/u,M:}8w7n;t,b/U(s an English lesson.9K.J*E,O'B)n3A:q8p8w.\,t.x8O