5. What were Betsy and her friends doing at her birthday party? Make up one sentence out of two.

Let's form sentences using the provided phrases. 0. The children (play) and (sing). Betsy's mum (prepare) everything for tea. Combined sentence: While the children were playing and singing, Betsy's mum was preparing everything for tea. Here are the corrected sentences based on the remaining prompts: 1. Betsy's mother (set) the table with a birthday cake. Emily and Rich (have) tea with sandwiches. Combined sentence: Betsy's mother set the table with a birthday cake while Emily and Rich had tea with sandwiches. 2. Betsy's dad (choose) a CD for musical chairs. Susie, Kim and Aleck (sing) a song to music. Combined sentence: Betsy's dad chose a CD for musical chairs while Susie, Kim, and Aleck sang a song to music. 3. Susie, Kim and Aleck (sing) a "Happy Birthday" song. Betsy (listen) to them carefully. Combined sentence: Susie, Kim and Aleck sang a "Happy Birthday" song as Betsy listened to them carefully. 4. Janet, Neil, Nelly and Jennifer (play) "pass the parcel". Tom (watch) the game with great interest. Combined sentence: Janet, Neil, Nelly and Jennifer played "pass the parcel," and Tom watched the game with great interest. 5. Mike (make) up a birthday poem for Betsy. The other children (have fun). Combined sentence: Mike made up a birthday poem for Betsy while the other children had fun. 6. Betsy (have) a birthday party. Her grandparents and other relatives (call) her all the time. Combined sentence: Betsy had a birthday party, and her grandparents and other relatives called her all the time. In summary, based on the provided phrases, we have created combined sentences that make logical sense based on the actions and events happening at Betsy's birthday party.