Preposition In, On, At

My birthday is __ Monday

• in

• on

• at

Santiago wants to live __ the 18th century

• on

• in

• at

My brother and I only go to our grandparent's house __ summers

• in

• at

• on

She never goes out __ night

• on

• in

• at

Jeremy's party isn't __ August

• at

• in

• on

Lilianna was born __ December

• at

• on

• in

I'll go shopping __ nine o'clock __Friday

• at - on

• in - at

• on - in

My grandfather can run __ the age of 80

• in

• on

• at

I'll buy flowers to Gaby __ her birthday

• at

• on

• in

Classes start __ the 5th of October

• on

• at

• in