The Bizarre Story of the Swedish Warship “Vasa”
(Available at: https://www.smithsonianmag.com/smart-news/bizarre-story-vasa-ship-keeps-giving-180964328/
– text especially adapted for this test).
The underlined structure in the excerpt “the reasons behind the instability
have
remained a point of debate over the centuries” (l. 11-12) is in the present perfect tense. Considering
this verb tense uses and the context in the article, we can say the action is/was:
