6-a person over 60 *

A) Involved
B) Schedule
C) Senior

7-is used to talk about abilities in the present... *

A) Can/can't
B) Must/mustn't (must not)
C) Should/shouldn't

8-is used to give strong recommendations... *

A) May/may not
B) Must/mustn't (must not)
C) Can/can't

9-is used to give suggestions...

A) Must/mustn't
B) Should/shouldn't
C) Could/couldn't

10-is used to talk about abilities in the past.... *

A) Could/couldn't
B) Can/can't
C) Should/shouldn't​