【正文】
rch (be) popular with the young people now. 解析: 主語(yǔ) Stories of the Long March是書名,謂語(yǔ)動(dòng)詞要用第三人稱單數(shù)形式。 答案: was million tons of coal (be) exploited every year in the city. 解析: 主語(yǔ)為 coal,是不可數(shù)名詞。 答案 : is , who (be) your close friend, will try my best to help you out of trouble. 解析 : who為