Fill in each gap with Since or For

Fill in each gap with Since or For.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
…...
a year ago.
a week.
a long time
2010.
last summer
4 weeks
6 o'clock
that day.
2 hours ago.
last week.
an hour.
.this week.
13.
14.
15.
16.
30 minutes
..September 4th 2020
............... Ngoc liked Dung
Phong met Vy