This exploratory study examines the role of foreign and second language contexts in the acquisition of conventional expressions. A group of 21 ESL learners was compared to 25 EFL learners randomly selected from a larger pool. Both groups completed an aural multiple-choice discourse completion task (MC-DCT), which was developed from a previously validated oral DCT. The aural MC-DCT consisted of 21 items with learner-generated options delivered aurally. A total of 91 native speakers also completed the task as a control group. The results showed an effect of learning environment on learners' selection of conventional expressions. The ESL group selected the conventional expressions in more items than the EFL group on the aural MC-DCT; the differences in the selections by the two groups were item-specific. The observed effect of learning context is discussed as related to individual items and type and modality of the task. The paper also discusses the special make-up of the ESL group due to the pandemic and expansion of the group for future research.