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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 _____.
小博士：时间名词前可以用的介词在初中阶段学的主要有5个，可以用下面的速记歌来帮助学习。
年月之前要用“in”，遇到日期却用“on”。
上午下午又是“in”，某日上下午“on”帮忙。
正午、晚上用“at”，黎明、午夜也相宜。
时钟之前也是“它”，差分过秒不用“它”
说“差”要用介词“to”，说“过”要用“past”。
多说多练牢牢记，学好英语本事大。
记住了吗？那么就请信心十足地动手做下面的介词填空练习吗：
1 My birthday is ________Dec. 1st.
2 He was born ________ 1991.
3 The People's Republic of China(中华人民共和国) was founded (成立) ________ October 1st 1949.
4 It was happened(发生) ________ the morning of a cold day.
5 －Do you have time ________ Sunday evening?
－I'm afraid not. But I am free ________ the afternoon.
6 I usually go to bed ________ 9:00, but ________ weekends, I'm later.
7 New school year begins ________ September.
8 You can get cheap things ________ this time of year.
9 We enjoy ourselves ________ Children's Day.
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