1.Ho Chi Minh city is the biggest city in Viet Nam

2.We often go to National park for entertaining

3.This is the first time she has been Sapa

4.I haven't seen my best friend for a long time

5.Da Nang is more exciting than Da Lat city

6.She is the youngest person in her class

Chúc bạn học tốt!^_^

1.Ho Chi Minh city/ biggest/ city/ Viet Nam =>Ho Chi Minh city is a biggest city in Viet Nam.

2.We/ often/ go/ National park/ entertaining =>We often go to National park for entertaining.

3.This/ first/ time/ she/ been/ Sapa =>This is the first time she has been Sapa.

4. I/ not/ seen/ my/best/ friend/ a long time =>I haven't seen my best friend for a long time

5 .Da Nang/ exciting/ than/ Da Lat city => Da Nang is more exciting than Da Lat city

6She/ youngest/ person/ her class => .She is the youngest person in her class