[word=and] [tag=NNS] [lemma=that] [tag=NNS] [lemma=□]
[word=and] [tag=NNS] [lemma=that] [tag=NNS] [lemma=must]
[word=and] [tag=NNS] [lemma=that] [tag=NNS] [lemma=that]
They faced the steady onslaught of new concepts , strategies , and skills that teachers must stay abreast of , while providing continuity in their classrooms .