题目内容
用适当的介词填空。
l. China has many world records _____ its beautiful buildings and structures.
2. He has been a teacher _____ he was 18.
3. Mount Tai is located _____ Shandong Province.
4. He has walked _____ two hours.
5. The project will be finished_____2020.
2. He has been a teacher _____ he was 18.
3. Mount Tai is located _____ Shandong Province.
4. He has walked _____ two hours.
5. The project will be finished_____2020.
l. for 2. since 3. in 4. for 5. by
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