It isto speak loudly in public.
在公众场合大声说话是不礼貌地,故所缺的词为impolite。
—Could you tell me _____ yuanxiao in China?
—Usually at the Lantern Festival.
宾语从句。
宾语从句用陈述句语序,排除C和D;再根据答语“通常在元宵节”可推断,问句的含义是“你能告诉我在中国人们什么时候吃元宵吗?”故答案为A。
—Harry,you should mind your manners. It is _____ to push in before others.
—Sorry,Mum. I won't do it next time.
形容词词义辨析。
polite有礼貌的;rude粗鲁无礼的;active活跃的;careless粗心的。根据本题语境可知,插队的行为是“粗鲁的”,故答案为B。