1) He's swimming in the river.
2) Where's Julie? She's at school.
3) The plant is on the table.
4) There is a spider in the bath.
5) Please put those apples into the bowl.
6) Frank is on holiday for three weeks.
7) There are two pockets on this bag.
8) I read the story in the newspaper.
9) The cat is sitting in the chair.
10) Lucy was standing at the bus stop.
11) I'll meet you in/at the cinema.
12) She hung a picture on the wall.
13) John is in the garden.
14) There's nothing on TV tonight.
15) I stayed at home all weekend.
16) When I called Lucy, she was on the bus.
17) There was a spider on the ceiling.
18) Unfortunately, Mr Brown is in hospital.
19) Don't sit on the table! Sit in a chair.
20) There are four cushions on the sofa.