whether后面一定要加ornot比如说这个句子thereisnodenyingthefactthatitisacontroversialtopicwhetherpeopleshouldkeeppet是这样就正确了吗?还是后面要加上ornot.

　　whether后面一定要加ornot

　　比如说这个句子thereisnodenyingthefactthatitisacontroversialtopicwhetherpeople

　　shouldkeeppet是这样就正确了吗?还是后面要加上ornot.