1.I like to look at the stars

at
night.
2.He woke up

at
9 o'clock this morning.
3.I don't like getting up early

in
the morning.
4. Bye! See you

at
on
in
Monday.
5.Where were your parents

at
on
in
26 March?
6.My brother got married

at
on
in
June.
7.Did you go out

at
on
in
Thursday evening?
8.Do you often go out

at
on
in
the evening?
9.Sarah and I first met

at
on
in
2000.
10.Did you go out

at
on
in
Friday?
11.Let's meet

at
on
in
6.30 tomorrow evening.
12.We often go to the beach

at
on
in
summer.
13.Jane's birthday is

at
on
in
May.
14.I often go away

at
on
in
the weekend.
15.I'm starting my new job

at
on
in
7 August.
16.Do you work

at
on
in
Sundays?

17.The company started (on/at/in)1991.