Jawaban:

1. (+) She reads a book in the library.

(-) She doesn't read a book in the library.

2. (+) They play football in the field.

(-) They didn't play football in the field.

3. (+) Alex and Anton go to Bandung today.

(-) Alex and Anton don't go to Bandung today.

4. (+) We see a monkey.

(-) We didn't see a monkey.

5. (+) My sister buys the fruits in the market.

(-) My sister doesn't buy the fruits in the market.

6. (+) She meets my friend last day.

(-) She didn't meet my friend last day.

7. (+) I speak to the headmaster politely.

(-) I didn't speak to the headmaster politely.

8. (+) We study English just now.

(-) We don't study English just now.

9. (+) The baby drinks milk two minutes ago.

(-) The baby didn't drink milk two minutes ago.

10. (+) They watch a film in the cinema.

(-) They didn't watch a film in the cinema.

I hope this will help..

Sorry if the answer is wrong..