①China ought to make-----to the world.

①China ought to make_____to the world.A.a greater contribution B.greater contribution②The water in this glass is too hot.I prefer some cold_____water.A.to boil B.having boiled C.boiling D.boiled③The suggestion that the president____the meeting was accepted.A.would attend B.attend C.attends D.ought to attend④The prize of the game show is 30000 and an all expenses____vacation to China.A.paying B.paid C.to be paid D.being paid