The national Institute of Mental Health estimates that more than ________ Americans over the age of 18 have experienced a diagnosable mental disorder at some time in the past year.
A) 1 in 15
B) 1 in 8
C) 1 in 4
D) 50 of
Question 2
Shy people want to participate in social interactions but find it difficult to do so, unlike ________, who prefer to keep to themselves.
A) gregarious people
B) ectomorphs
C) extroverts
D) introverts