18c. Grammar: Present Perfect Simple vs. Continuous

18c. Put the verbs in brackets ( ) into the gaps in the right form. Use the Present Perfect Simple or the Continuous. 

Masukkan kata kerja dalam tanda kurung ( ) ke dalam bagian yang kosong dengan formula yang benar. Gunakan Present Perfect Simple atau Continuous..

e.g.
Ellen : Where are you and your family going to live?
Ian: Well, we’ve been talking (talk) about that for weeks, but we haven’t decided (decide) anything yet.