two kilos of rice is...如果用how many 怎么提问?How many kilos are 还是 is?
问题描述：
two kilos of rice is...如果用how many 怎么提问?
How many kilos are 还是 is?
答
how many 2kilos of rice is ?
rice 才是提问的对象，因此用is
答
应该是how many kilos of rice is....
答
How many kilos of rice is there in the bag?
是is,主语是rice,而kilos做重量,不算主语.