The vet told him to feed the puppy 2-3 times every day.[否定句]the vet told him ______ ______ feed the puppy 2-3 times every day.

问题描述:

The vet told him to feed the puppy 2-3 times every day.[否定句]
the vet told him ______ ______ feed the puppy 2-3 times every day.

not to