根据中文意思完成下列句句。 1. 吸烟会让他的病情加重，除非他立即戒烟。 Smoking will make his illness worse ________. 2. 叫他们按时上交作业，不要再上网了。 Tell them ________ their homework on time and not to surf the Internet ________. 3. 多好的消息啊！所有驾驶员5月1号起不允许酒后驾驶了。 ________ news! All drivers are ________ to drive after drinking from May 1. 4. 在考试中关注细节，我们取得好成绩并非难事。 It's not difficult for us ________ in the test ________ paying attention to the details. 5. 中国在世界的政治、经济舞台上正扮演着越来越重要的角色。 Now China —________ on the world's political and economic stage.