Many measures___to stop the forest froom being cut down since the 1980s(take)

Many measures___to stop the forest froom being cut down since the 1980s(take)
Many measures___to stop the forest froom being cut down since the 1980s(take)

Many measures___to stop the forest froom being cut down since the 1980s(take)
have been taken
与since搭配用完成时,措施被采取,用被动语态

have been taken .
since 是现在完成时的标志，所以时态应该为have done 的形式，在根据语意“从1980年以来，为阻止砍伐森林，采取了多项措施。”措施是被采取的，应该用被动语态，故为“have been taken ".