英语词性问题Look ai these BEAUTIFUL flowers.These fiowers look BEA

英语词性问题
Look ai these BEAUTIFUL flowers.
These fiowers look BEAUTIFUL.
They promise to meet our NEEDS.
He NEEDS to buy some stationery.
ONLY three of us went there.
He was the ONLY league member.
Our national fiag WAVED in the winds.
A great WAVE made the ship sink.
请解释上面大写单词的词性谢谢