The answer is :

$\begin {array} {1 1} (1)\;\large\frac{1}{2},\large\frac{2}{3},\large\frac{9}{10},\large\frac{10}{11} & \quad (2)\;\large\frac{1}{2},\large\frac{2}{3},\large\frac{3}{4},\large\frac{9}{10} \\ (3)\;\large\frac{4}{5},\large\frac{9}{10},\large\frac{10}{11},\large\frac{14}{15} & \quad (4)\;\large\frac{1}{2},\large\frac{2}{3},\large\frac{8}{9},\large\frac{10}{11} \end {array}$