问题
填空题
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.
答案
l. for 2. since 3. in 4. for 5. by