In the following passage some of the words have been left out. Read the passage carefully and choose the correct answer for the given blank out of the four alternatives. We have rich cultural _____ . Its roots go into _____. Ours has never been a closed ______. It has _______ just like a tree, ______ to external ______ but holding its roots _______. But one wonders today whether it will be able to hold its _____. The ______ of our cultural heritage has come under the _____ of western culture. Ours has never been a closed ______