complete the answers to the problems in tow different ways, using these verbs.
remplace   ,  rewind    , returne     ,expand    ,clean
exemple:  think the battery needs replacing/to be replaced
1) the flash on my camera doesn't work. i think the battery.........
2)why is my computer so slow when i use the internet? i expect the memory....
3)there are greasy marks all over the TV screen. yes, i know. the screen.....
4) how annoying! when you press the channel buttons, you get the  wrong TV programmes. the channel buttons probably......
5) oh ,no! didn't you record that  programme last night? don't worry. i did! the videotape....., that't all.