完成句子选用单词并用其适当形式填空。
science，mistake，talent，win，him，person，improve，good，discuss，healthy
1．The prize of the________was a box of chocolate.
2．The boy decided to work out the difficult problem by________.
3．We had a________with them about the differences between the UK and the US.
4．The boy is very________，and he is very popular with his classmates.
5．My son wants to be a________when he grows up.
6．________computers are getting cheaper.
7．The new bridge is much________than the old one.
8．Mike started working hard to________his English.
9．Colorful fruit and vegetables are good for our________.
10．Cindy was very sad because she made a lot of________in yesterday's exam.