sb= somebody
sb is from hong kong, that person went to england for study when he/she was 10 years old. This is the 5th year. He/she is now in Year 9 (Form 3). He/she is wondering is it ok for he/she to go back to study in HK, a very good international school, for 2 years, GCSE years. Just to recover his/her knowledge of Maths & Science. (as u know, the English's maths are not good!) He/she is getting quite well in maths at school, everytime when he/she goes back to HK, he/she have extra maths lessons with a tutor. After the GCSE years in HK, he/she is going to go back to UK, and apply for the top school in England. This is the only way he/she thinks that might work for entering a good uni. What do u think