Jawaban:

1.He has started a new job

2.We have lived in Bali for awhile now

3.They have studied Math

4.She has finished her homework recently

5.He has learned Spanish for 3 month

6.She has not walked on the moon

7.Doctors have not cured cancer

8.Joko has not arrived in Jakarta yet

9.Has Tony mastered french?

10.Have they collected their paper?

Penjelasan:

Present Perfect adalah kalimat atau kata kerja yang menjelaskan atau menyatakan sesuatu yang pernah terjadi di masa lalu maupun dalam waktu singkat atau lama dan masih berlanjut atau sudah selesai pada waktu tertentu dan efeknya masih berlanjut.

Present Perfect is an Adjective or a sentence that explain or indicates something or an action that has happened in the past whether in a short time or in a long time and is still happening or had happenned on a specific time and the effect still continue