1.She / buy a lot of souvenirs / last summer vacation
......=> ....She bought a lot of souvenirs last summer vacation
2. My mom / give me a yellow cap
=> My mom gives me a yellow cap
3. They / arrive at the airport/ at eight o'clock this morning
=> They arrived at the airport at eight o'clock this morning
4.i / speak to her about my vacation
=> I spoke to her about my vacation
5. Mr.Quang/ teach mathematics for many years
=> Mr. Quang has taught mathematics for many years
6. I/ see you at the party /last night
=> I saw you at the party last night
7. The children/ be very happy in their trip to Nha Trang
=>The children will be very happy in their trip to Nha Trang
8. Minh / put the cake on the table
=>Minh puts the cake on the table
9. They / live here / two years ago
=> They lived here two years ago
10. Nga/ be late for school/ yesterday morning
=>Nga was late for school yesterday morning