“He had been traveling around the world when he discovered his passion for art.” What verb tense is used in the sentence to express a continuous action that occurred before a specific moment in the past? A) past perfect continuous B) future

New regulations for digital platforms ___ by the European Union every year. - - - A) are approving B) are approved C) approves

All financial records ___ before the auditor’s unexpected arrival this morning. - - - A) had been digitized B) have been digitized C) were digitized

Next year, they ___ the biggest art exhibition in the city. - - - - - A) would hold B) are being held C) will be holding

Currently, contemporary artists ___ digital sculptures that challenge traditional forms of art.  - - -  A) have created   B) are creating   C) created

The new mandatory subject on global politics ___ in schools across the region now. - - - A) is being implemented  B) has been implemented  C) is implementing

AI systems often ___ new algorithms to optimize data processing. - - - A) has been developing B) develop C) has developed

At 10 a.m. yesterday, historians ___ an ancient trade route between civilizations. - - - A) researched B) have researched C) were researching

Before the final debate, the presidential candidates ___ tirelessly in key swing states. - - - A) has campaigned B) had campaigned C) were campaigning

The technology company ___ in stronger cybersecurity months ago to avoid the data breach.     - - - - - -   A) must invest       B) should have invested    C) will have invested

The central bank ___ inflation rates for the past three months without intervention. - - - A) is monitoring B) has been monitoring C) had monitored

By the year 2040, biotechnology ___ the way we treat chronic diseases. - - - A) has been transformed B) should be transforming C) will have transformed

By the time I finish my degree, I ___ in this city for five years.      - - - - -     A) have been living       B) will have been living       C) am living