(用动词的适当形式填空) She _______ (need) _______ (wear) warm clothes because it is very cold outside．

(用动词的适当形式填空) It was difficult for us _______ (decide) which road to take．

（用所给单词的适当形式填空） The school prize-giving _________ (come up) next week．

（用所给单词的适当形式填空） The _________ (increase) population may be the greatest challenge of the world today．

（完成单词） A c_________ gathered at the scene of the fire．

（完成单词） The runaway of the t_________ accident is wanted by the police．

（完成单词） We give 10 P_________ discount for cash．

（完成单词） There was a steady i___________ in population．

（完成单词）Nobody can p______ him，because he doesn't think it's wrong．

（完成单词）梂hat is t______ Chinese food? 桪umpling．