根据汉语提示完成英语句子。 1.当飞机起飞的时候, 天正下着大雪。 It _______________________ heavily when the plane____________________. 2.他们起得很早, 以便能赶上第一班车。 They got up early_____________________ they could ___________________the first bus. 3.孩子们穿上最好的衣服来庆祝春节。 The children ____________________ their best clothes to ___________ the Spring Festival. 4.瞧, 孩子们正在追逐一只小猫。 Look! The children_________________________________ a small cat. 5.我女儿正在写信时, 其他的孩子都在外面玩耍。 My daughter was writing a letter___________ the other children ___________outside.
答案:1.was snowing; took off 2.so that, catch 3.are dressed in, celebrate 4.are chasing after 5. while, were playing