1.The teacher left the classroom just now.
2.Mother cleaned/cleans my room this morning.
3.Robert visited Thailand last fall.
4.He has lived in Shanghai for three years.
5.She has been there since last month.
6.The two leaders have met in London for three hours.
7.They left their hometown the day before yesterday.
8.He will speak to her tomorrow.
9.Tom read the book last night.
10.He has already sharpened his pencil.
这都是我自己写的哦,希望对你能有帮助.