What is a disadvantage of only focusing on written practice?

Focusing solely on written practice can indeed limit vocabulary development. Written exercises typically involve engaging with language through text, which may not expose learners to the full range of vocabulary they would encounter in spoken contexts. Oral language often includes idiomatic expressions, informal language, and variations in pronunciation that are not as frequently present in written materials. This restriction can hinder learners from fully expanding their vocabulary, as they may miss out on the nuances and contextual usage of words in everyday conversation.

In contrast, engaging with spoken language through listening and speaking practice facilitates a richer understanding of vocabulary in its natural setting. This holistic approach allows for the acquisition of new words and phrases that are frequently used in verbal communication, promoting a more comprehensive command of the language overall.