Fill in each gap with a suitable word based on the information of the passage:
21 February is (a)------- as the International Mother Language Daynot only in Bangladesh, but also worldwide. We (b)-----—this day as Shaheed Dibosh every year. The people of Bangladesh observe the day with ------ songs to (d)------respect to the martyrs. They go to the Shaheed Minar (e) ------- wearing black badges.