  It is well known that a direct sum of CLS-modules is not, in general, a
CLS-module. It is proved that if $M=M_1\oplus M_2$, where $M_1$ and $M_2$ are
CLS-modules such that $M_1$ and $M_2$ are relatively ojective (or $M_1$ is
$M_2$-ejective), then $M$ is a CLS-module and some known results are
generalized. Tercan [8] proved that if a module $M=M_{1}\oplus M_{2}$ where
$M_{1}$ and $M_{2}$ are CS-modules such that $M_{1}$ is $M_{2}$-injective, then
$M$ is a CS-module if and only if $Z_{2}(M)$ is a CS-module. Here we will show
that Tercan's claim is not true.
