Time _____, the celebration will be held as scheduled.
B
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The opening ceremony is a great occasion. It is essential_____ for that.
Evenifhisletter（）tomorrow，it（）toolatetodoanything.
Itisnotuncommonforthere_____problemsofcommunicationbetweentheoldandtheyoung.
Prices have recently risen in order to __________ the increased cost of raw materials.