3. Fill in the prepositions at, on and for: a) Charlie smiled nervously and sat down ___ the edge of the bed. b) The four old people sat ___ end of the bed and stared with anxious eyes ___ the bar of chocolate in Charlie’s hands. c) The room became silent. Everybody was waiting ___ Charlie to start opening his present. d) Charlie looked down ___ the bar of chocolate. e) They were trying to prepare Charlie ___ the disappointment.

Charlie smiled nervously and sat down on the edge of the bed.

The four old people sat at end of the bed and stared with anxious eyes at the bar of chocolate in Charlie’s hands.

The room became silent. Everybody was waiting for Charlie to start opening his present.

Charlie looked down at the bar of chocolate.

They were trying to prepare Charlie for the disappointment.