Add spaces: Thesandisfine,butthespaceforplayingisoftenlimited.

Answer: The sand is fine, but the space for playing is often limited.

Add spaces: 7123Concreteplacers,concretefinishersandrelatedworkers

Answer: 7123 Concrete placers, concrete finishers and related workers

Add spaces: Registration16January200710:37

Answer:
Registration 16 January 2007 10:37