Question

roberta was studying instead of having fun. past progressive present progressive future progressive

Explanation:

The sentence "Roberta was studying instead of having fun" uses the structure "was + verb - ing", which is characteristic of the past progressive tense. The past progressive tense is used to describe actions that were in progress at a specific time in the past. The present progressive uses "is/am/are + verb - ing" and future progressive uses "will be + verb - ing", so the correct tense classification here is past progressive.

Answer:

past progressive