1 My favorite sport is tennis/ my father's favourite sport is tennis.

=> my father like tennis most./ I like tennis most

2 My mother is a fast swimmer

=> my mother swims fast.

3 Lien doesn’t like doing sport very much

=> Lien isn' t interested in doing sport

4 Minh plays football very well

=> minh is very good at playing football.

5 We do lot of outdoor activities in summer

=> we take part in a lot of outdoor activities in summer

6 My brother can run very fast

=> my brother is a fast runner

7 Hien is bad swimmer

=> hien swims badly 

8 Nga likes table tennis

=> nga’s favorite sport is table tennis

9 Mike is not interested in music as his sister is

=> Mike's sister is more interested in music than him

10 Sts at our school take part in a lot of outdoor activities

=> sts at our school do a lot of outdoor activity.