Open the brackets and use correct form of verbs,adverbs,prepositions

If you __________________ (to go) shopping in any toy store, you can see clearly the
different games and toys for boys and girls: there are a lot of pink princesses and dolls
for girls; and dark-coloured cars, guns and soldiers for boys. In fact,
__________________ (there/this/it) is difficult to buy a toy for a girl that is not pink.
Some people think that a lot of pink is bad for girls. Also, Sam Palmer, author of
Toxic Childhood, admits she is very worried about it as most girls over the age of one
__________________ (to be) crazy about this colour. According
__________________ (to/on/at) some psychologists, this happens for two reasons.
Firstly, most companies offer too many products in pink. Thus, parents
__________________ (not to allow) by producers to choose another colour. Secondly,
parents can be blamed too, as many think that their little daughters look
__________________ (cutely/cute/cutily) in a pink outfit.