Giúp mik bài này nha mn

Exercise 3: Complete the sentences with object pronouns. 0.1 don't know those girls. Have you talked to ..them... ? 1. Who is the woman in the black coat? Do you know.. .? 2. I don't know those people. I have never seen before. ......... 3. Where's David's wife? I need to talk to 4. Mr ...