  We present the first evidence for the pulsations of primary components of
four eclipsing binary systems. The TESS light curves of the targets are
analyzed, the light and the absolute parameters are derived. Fourier analyses
are applied to the residual data subtracted from the binary models to reveal
the pulsational characteristics of the primaries. The components of the systems
are compared to well-known binary systems of the same morphological type. The
types of pulsational classes for the primaries are also discussed. Results show
that CPD-30 740 and V1637 Ori are oscillating eclipsing Algol type binary
stars, while HD 97329 and TYC 683-640-1 are found to be detached systems with
pulsating primary components. We conclude that the primary components of the
systems are pulsating stars.
