There are air and water on the Earth.air不可数,There be遵循就近原则,为什么不用is
问题描述:
There are air and water on the Earth.air不可数,There be遵循就近原则,为什么不用is
答
There are air and water on the Earth.air不可数,There be遵循就近原则,为什么不用is