Choose the suitable prepositions to complete the text.

Choose the correct option.

I take pride [on|in|of|by|without|for] buying lots of things online. It helps me both to save up money and to get nearly everything I need without leaving home. Instead [on|in|of|by|without|for] going to shops and supermarkets, I order goods on my smartphone via retail websites.

I always look [on|in|of|by|without|for] the biggest discounts. I try to be careful: if something's on sale, it's usually [on|in|of|by|without|for] great demand. It means that it can become out [on|in|of|by|without|for] stock sooner than I order it.

I always pay [on|in|of|by|without|for] my orders by credit card and wait for them to be delivered right to my flat.