Răspuns:
7. a. done
b. taking
c. taken
d. done
e. took
f. take
g. made
h. take
i. took
j. does
8. a. knowledge
b. discipline
c. ecosystem
d. dictionary
e. calculator
f. university
g. intelligence
h. comprehension
i. secondary
j. experiments
9. a. up
b. to
c. in
d. for
e. at
f. by
g. on
h. in
i. by
j. up