College Discussion - View Single Post - Help thread for SAT blue CB book questions

tweeeek · 05-29-2005, 08:20 PM

It should be "has been" because the phrase "For the past x amount of time" implies that the action is still occurring

You're also given a clue later in the sentence that it is still happening because it says "North Americans have been exploring"

05-29-2005, 08:20 PM	#7
tweeeek Junior Member Join Date: Apr 2005 Threads: 11 Posts: 94	It should be "has been" because the phrase "For the past x amount of time" implies that the action is still occurring You're also given a clue later in the sentence that it is still happening because it says "North Americans have been exploring"