English Skills 10th Edition by John Langan, Zoe Albright

Exercise 43

All but one of the ten sentences that follow need s or es verb endings. Cross out the nonstandard verb forms, and write the standard forms in the spaces provided. Mark the one sentence that needs no change with a C for correct.
EXAMPLE
wants Dana always want the teacher's attention.
__________ Recently, I bought a computer that operate very fast.