有3道英语题目不会,求帮忙1.without passion ,love would become mineral wa

有3道英语题目不会,求帮忙
1.without passion ,love would become mineral water,_____(taste) and colourless.
2.Being a host city will also help the citizens respond actively to low-carbon living and raise people's ____(award) of environmental protection.
3.Thanksgiving Day is a holiday celebrated ______(annual) in the united States on the fourth Thursday in November.
用适当形式填空,能否告诉我为什么这样填