This is a regular verb. It follows the conjugation pattern of the verb comer.
Present:
A escola suspende as aulas por causa da tempestade.
The school suspends classes because of the storm.
Preterite:
O Miguel suspendeu a assinatura no mês passado.
Miguel suspended the subscription last month.
Conditional:
A Clara suspenderia a reunião até amanhã.
Clara would suspend the meeting until tomorrow.