Jawaban:

1 .the race has begun at the park since just now

2.she has choosen to be a head master since this morning

3.i have drunk 1 glass of water since yesterday

4.the lego bridge has fallen since 3 days ago

5.she has given a teddy bear to me since just now

6.i have heard the police has called us on the phone since

2 minutes ago

7.she has hidden somewhere at the mall since just now

8.They haven't known about him yet

9.the prisoners have shot so many people since 14

seconds ago

10. the teacher has taught so many lesson to us since 10

years ago

Penjelasan:

semoga membantu. kl ini bener ,di rate ya sampe 5 bintang :)