题目

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________his7．列竖式计算：2.7+3.33=0.408×8.5=20-9.42=验算．