Parent use. If they aren't taught to use seat belts, then they won't wear seatbelts
A surgeon who has a positive attitude that motivates her assistant.
Cystic fibrosis can be diagnosed at any time along the lifespan, but it is usually dx'd during childhood due to flare ups caused by activity. Huntington's on the other hand can be incredibly latent in its diagnosis and can be found after puberty, as well as in the young adult years (25-30)
Caring for the patient should be the number one priority in a healthcare setting however there are times it can be put behind. The answer can be C. during major surgeries as performing a surgery needs focus and full attention to avoid errors.
These are my suggestions for the final part of your homework: 6 - A; 7 - B; 8 - D; 9 - C; 10 - C.
The exercise follows the Sequence of Tenses rules.
For 2 the answer is C because you have two simultaneous actions which need same tense like, the Present.