Write for or since. 1. Since 2002. 2 ... yesterday. 3 ... six days. 4 ... a month. 5 ... two weeks. 6 ... last month. 7 ... two years. 8 ... a whole day. 9 ... three hours. 10 ... Monday. 11 ... my birthday. 12 ... last weekend.

For употребляется, когда мы говорим о периоде, о продолжительности.

Since - с. С какого-то момента началось действие. Поэтому:

Since yesterday.

For six days.

For a month.

For two weeks.

Since last month.

For two years.

For a whole day.

For three hours.

Since Monday.

Since my birthday.

Since last weekend.