This text is missing some spaces, please add them: Theleaves,flowersandtubersofthecallalilyarepoisonoustohumansandanimals.
The leaves, flowers and tubers of the calla lily are poisonous to humans and animals.

This text is missing some spaces, please add them: Whenthesemesterends,23studentsisgoingtomovetoRoskildetobuildthebaratthecampus.
When the semester ends, 23 students is going to move to Roskilde to build the bar at the campus.

This text is missing some spaces, please add them: colours.Hegaveamapwith12countries,eachintwodisjointparts,whichrequired12colours.
colours. He gave a map with 12 countries, each in two disjoint parts, which required 12 colours.