句子翻译:根据中文提示完成句子。 1. 昨天我花了大约两小时完成了作业。 It _______ me two hours to _______ my homework yesterday. 2. 你不应用筷子指人。 You shouldn't _______ _______ anyone with your chopsticks. 3. 他努力学习,以便能够赶上其他同学。 He works hard so that he can _______ _______ with other students. 4. 你应该见面说“好”。 You are_______ _______say hello when you meet. 5. 无论这项任务有多么困难,我们都会按时完成。 No matter _______ _______ the task is, we'll finish it on time.