Fill in the blanks using suitable options.
Rivers are considered holy (a) ----- India but they are hardly treated (b) ----- respect.All kinds of dust and filth find (c) ----- way into the rivers.If we have to treat and purify the water (d) ----- drinking it,how can the fish survive in (e) ----- waters?Every year river Gomti becomes (f) ----- death bed of thousands of fish because the water released in the reservoir upstream carries effluents from the neighbouring industries.
(a)   i) in  ii) on  iii) at  iv) of
(b)   i) in  ii) with  iii) at  iv) of
(c)   i) their  ii) his  iii) its  iv) over
(d)   i) in  ii) on  iii) for  iv) of
(e)   i) these  ii) this  iii) that  iv) their
(f)    i) the  ii) a  iii) their  iv) those