** He has been very interested in doing research on _______ since he was at high school.

• biology
• biological
• biologist
• biologically

** Are you sure that boys are more _______ than girls?

• active
• act
• action
• activity

** You are old enough to take _______ for what you have done.

• responsibility
• responsible
• responsibly
• irresponsible

** These quick and easy _______ can be effective in the short term, but they have a cost.

• solutions
• solve
• solvable
• solvability

** He was looking at his parents_______, waiting for recommendations.

• obediently
• obey
• obedience
• obedient

** The interviews with parents showed that the vast majority were _______ of teachers.

• supportive
• support
• supporter
• supporting

** The nurse is always kind and helpful to us. She is a very ________ person.

• caring
• careful
• careless
• care

** To succeed in work, we need to have _____________

• confidence
• self-confident
• confidently
• confident

** He is frank and___________

• decisive
• decide
• decision
• Decisiveness

** I often share my ___________ secretes with my parents.

• personal
• personally
• person
• people