1) has shown that exercise has a positive effect on memory. 2 In our class, we discussed on the results of a recent eating habits of teenagers.
3 When you measure chemicals _ is very important
4 After increasing his hours at the gym, his competitions greatly improved.
5 Good time management improvesin the workplace
6 The ability to —— for a long time is rare is young children
7 Next year, the university plans tothe library
8 My biggest this year is so keep up with my assignments

Accuracy / challenge / concentrate/ efficiency / evidence : expand / performance / study