1. I haven't seen the cartoon "Tom and Jerry" for 3 years.

2. I spent 3 days revising English grammar.

3. They have built that school for 15 years.

4. Although she was sick, she went to school.

5. It's 5 years since they went to Da Lat.

6. If an phone is less expensive/ cheap, Tom can but it.

7. She hasn't gone to Vung Tau Beach since September.