根据所给汉语完成英语句子，每空限填1个单词。
1. 谢谢你邀请我参加你的生日聚会。
Thank you _____ asking me to your birthday _____.
2. 瞧！农民们正忙着在田间干农活。
Look! The _____ are _____ doing farm work in the fields.
3. 医生告诉我这种药一天服三次。
The doctor told me _____ take this medicine _____ a day.
4. 如果明天不下雨的话，我将和父母一起去动物园。
I'll _____ to the zoo with my parents _____ it doesn't rain tomorrow.
5. 这些机器是中国制造的，他们在世界上很受欢迎。
These machines are _____ in China. They are very popular in the _____.
