1.marie curie dicovered radium in 1898 -radium........... 2.I took a computer course last year,but i can't still use the internet -although........ 3.i can't play a musical instrument -i wish......... 4.surfing the net is interesting -it is............. MOI NGUOI OI AI CO THE GIUP EM LAM BAI NAY KHONG ,EM CAN GAP LAM A,EM CAM ON