what fators contribute to this society?这句话怎么没有助动词哟?

what fators contribute to this society?这句话怎么没有助动词哟? 英语：动名词做主语Having contributed to the mystique was the view that if this secrecy was ever given up,foreigners would fall over themselves in the rush to withdraw money.Having contributed 动名词做主语 这里能不能换成 Contribu what What what what what what! what what? what? what What what What what 英语翻译Take 3 Super Tummy Flat capsules each day either before breaktast,lunch or dinner with a glass of water .It is recommended that the capsles be taken for one month.DO NOT EXCEED THE DAILY RECOMMENDED DOSAGE.CAUTIONThis product can contribu The number of the foreign tourists to visit the US is expected to be more than 2 million by 20l5,lThe number of the foreign tourists to visit the US is expected to be more than 2 million by 20l5,l4 billion to the US economy.A.to contribute B.contribu