键盘指法练习
电脑打字测试
R, U, and Space
键盘指法练习 R, U, and Space
开始课程
选择其他课程
Letter R
Letter U
Letters R and U
Letters R and U - Mix
Letters R and U With Space
R and U - Drill 1
R and U - Drill 2
R and U - Exercise 1
R and U - Exercise 2
