4: There is a cat on the porch
5: There are a lot of people in this elevator

III:

1: is -> are
2: student -> students
3: that -> so
4: in -> on
5: at -> in

II:

1: apartments
2: hall
3: dishwasher
4: microwave
5: cupboard
6: kitchen
7: messy
8: fridge
9: sofa
10: wardrobe

I:

1: Jessia waited for Jim at the corner
2: There is a big tree in my grandparents' garden
3: We spent a quiet evening at home
4: I'm growing tomatoes in my garden
5: There are not 2 cats in the room

II:

1: are -> is
2: is -> are
3: in -> on
4: person -> people
5: ice-cream -> an ice-cream

I:

1: There is a bed at the corner of the room
2: Shelves are above the closet
3: The wardrobe is at the center of the room
4: Table is between the two chairs

III

1.is → are

2.student → students

3.that → so

4.in → on

5.at → in

II.

1.apartments

2.hall

3.dishwasher

4.microwave

5.cupboard

6.kitchen

7.messy

8.fridge

9.sofa

10.wardrobe

I.

1.Jim waited for Jessie at the corner

2.There is a big tree in my grandparents' garden

3.We spent a quiet evening at home

4.I'm growing tomatoes in my garden

5.There aren't two cats in the room

II.

1.are → is

2.is → are

3.in → on

4.person → persons

5.is → are

I.

1.There is a bed at the corner of the room
2.The shelves are above the closet
3.The wardrobe is in the center of the room
4.The table is between two chairs