21.For the time being. Alice is teaching that group
=>For the time being, that group is being taught by Alice.
22.John is calling the other members
=>The other members is being called by John
23. The company is developing a new procedure
=>A new procedure is being developed by the company
24.Who are they keeping in the kitchen?..
=>Who is being kept in the kitchen
25.What books are people reading this year ?...
=>What books are people being read this year
26. Nam is milking the cows.
=>The cows are being milked by Nam
27. My father is washing the car.
=>The car is being washed by my father
28. 28. Sheila is drinking a cup of tea.
=>A cup of tea is being drunk by Sheila
29. Mary is cutting the cake with sharp knife...
=>The cake is being cut with sharp knife by Mary
30. The mailman is delivering the mail now..
=>The mail is being devivered by the mailman