1(i) -- Simple present: I write a letter to him
Simple past: I wrote a letter to him
2(i) Simple present: I go to the school
Simple past: I went to the school
3(i) -Simple present: She sings at Hard Rock Café
Simple past: She sang ar Hard Rock Café
4(r)- Simple present: He plays guitar
Simple past: He played guitar
5(i) -Simple present: Catarine buys gifts to her family
Simple past: Catarine bought gifts to her family
6(i) -Simple present: John understand the lesson
Simple past: John understood the lesson
7 (r) Simple present: The teacher opens the window
Simple past: The teacher opened the window
8-Simple present: My mom has a blue t-shirt
Simple past: My mom had a blue t-shirt
9(i) -Simple present: I see a bird on the tree
Simple past: I saw a bird on the tree
10(r) - Simple present: My friend arrive today
Simple past: My friend arrived yesterday
