1A: Excuse me, is this seat taken?
B: No, it ………. free, go ahead.
B: No, it ………. free, go ahead.
Take this test to assess your knowledge of English grammar and usage in the business context, C1 level.
Topics: tenses (both active and passive voice), modal verbs, phrasal verbs, reading comprehension, correct use of prepositions, appropriate use of vocabulary in the business context.