45. Max always ________ his important computer documents on an external drive. 1 điểm prints out saves up backs up sets off 46. If the computer doesnt work try . it off and on again. 1 điểm to switch switching switch having switched 47. The suspect ______ being near the bank at the time of the crime. 1 điểm claimed accused denied refused 48. The man is believed _______ over a thousand marathons since he started. 1 điểm to run to be running he has run to have run 49. Paul didnt like decorating so he got a professional decorator _______ his flat for him. 1 điểm designing design she designed to design giúp mik nhamik thật sự rất gấp