When I try to find ______that prevent so many people from taking part in the program, it seems to me that there are two main causes.
Mother wrapped the baby, who was _____, in a blanket gently.
What a _____ boy! I don’t know what to do with him.
The dog didn’t seem to smell _____, for it didn’t even smell the meat, which appeared so _____.
-- What caused the failure of the experiment? -- _____.
A cracked bell can never sound _____.