Я вот не могу братишке сделать 3и4 задание помогите пожалуйста

3. 2) They are talking in the classroom now     3) We are learning English now     4) He is doing the homework now     5) She is writing a letter now     6) We are watching TV now 4. 2) They are talking on the phone     3) He is riding on the merry-go-round     4) He is choosing an interesting book     5) He is standing near the 3D cinema     6) She is running