Circle the correct item 1. Tina sunbathed/was sunbathing while her children

Circle the correct item 1. Tina sunbathed/was sunbathing while her children swam/were swimming in the sea. 2. Mr White phoned/had phoned us after the conferense was beginning/had begun. 3. They are sailing/ had been sailing for two weers before they reacher the continent. 4.My brother bought/had bought this computer a year ago. 5.We had/were having breakfast when our neighbour knocked/had knocked at the door. 6.Tom39;s eyes were red because he had worked/had been working at the computer all day. 7.Dolly took/was taking a letter? opened/ was opening it and started/had started/had started reading. 8.After we cleaned/had cleaned the house we decided/had decided to go to the cinema. 9.The boys were playing/had been playing tennis at 3 o39;clock yesterday. 10.Mrs David was upsed because she was losing/had lost her purs