If it weren't ... to fly, where would you go to?
insufficient
impossible
impolite
What was the last .... thing you bought?
inexpensive
inattentive
informal
Why is it bad for your health to be physically ...? What are the benefits of exercises?
immoral
inactive
innefective
What are some ... ways of studying English?
improbable
ineffective
insensitive
Is it okay to be ...? How can we learn from our flaws?
improbable
inactive
imperfect
What is the best way of dealing with ... people?
impolite
improbable
invalid