2.1.3
2) boxes
3) offices
4) letters
5) months
6) addresses
7) postmen
8) computers
9) envelopes
10) wishes
2.1.5
Spring -- March, April, May,
Summer -- June, July, August,
Autumn -- September, October, November
Winter -- December, January, February.
2.1.6
31 days - January, March, May, July, August, October, December
30 days - April, June, September, November
29 days - February