Kate is really friendly. She is never _______ others.
—We find ______ impossible for us to learn a foreign language well in a short time.
—You should spend as much time as you can_____the piano.
—Do you know ______ I could pass the exam? —Sorry, I‘ve no idea.
—Who’s the most modest boy in your class?—Daniel.He never___ in public.
—The holiday was really interesting exciting! —Yes, ______the long journey on the road was boring.