Find and correct the mistakes

16. A. technological
Find and correct the mistakes
B. possibility
P. 17. I used to having a very bad argument with my Maths teacher when I was at high school.
A. when
C. with
C. seniority
18. The new manager wondered
A. a
B. having
if to use a new technology from their partner in the UK.
B. if
C. the
19. She said she doesn't want to see any of them and asked them to go away.
A. asked
C. to go
B. doesn't
20. I wish I can set foot on every corner of Vietnam when I reach 40.
A. of
B. on
C. reach
D. tuberculosis
D. at
D. from
D. any
D. can