Add punctuation: This is a matching game with diamonds
A: This is a matching game with diamonds.

Add punctuation: The outside garden is ideal for strolls or for sunbathing during the long summer days
A: The outside garden is ideal for strolls or for sunbathing during the long summer days.

Add punctuation: During the autumn of 1996 and the spring of 1997 test runs and deliveries were carried out and now deliveries have begun in earnest at first in Scandinavia and then gradually throughout western Europe
A:
During the autumn of 1996 and the spring of 1997 test runs and deliveries were carried out, and now deliveries have begun in earnest, at first in Scandinavia and then gradually throughout western Europe.