Over the years I have collected five ________ foreign stamps, ________ of them are from the USA. A. hundred; two hundreds B. hundred; two hundred C. hundreds of; two hundred D. hundreds; two hundreds
根据句意和汉语注释,写出单词的正确形式。 China is ______ (富有)and more powerful than ever before. Everyone is _____________(料想) to know the rules. Ren Rong has devoted himself to cultural _________(对话) between China and West The researchers hope their new ______(发现) can be used to make objects that are difficult or impossible to replace.