Jawaban:

1. (+)we are having a barbecue in the backyard

(- ) we aren't having a barbecue in the playground

(?)are you having a barbecue in the backyard?yes, we are

(?)are we having a barbecue in the playground? no, we aren't

2.(+)the ball is rolling on the floor

(- )the ball isn't rolling on the grass

(?)is the ball rolling on the floor?yes, it is

(?)is the ball rolling on the grass?no, it isn't

3.(+)the earth is rotating around the sun

(- )the earth isn't rotating around the moon

(?)is the earth rotating around the sun?yes, it is

(?)is the earth rotating around the moon?no, it isn't

4.(+)the boys are studying geography in the library

(- )the boys aren't studying maths in the library

(?)are the boys studying geography in the library?yes, they are

(?)are the boys studying maths in the library?no, they aren't

5.(+)my sister is washing the clothes

(- )my sister isn't ironing the clothes

(?)is my sister washing my clothes?yes, she is

(?)is my sister ironing the clothes?no, she isn't

Penjelasan:

semoga membantu