She _____ the book sometime in the past as there is no way she could have answered the questions so accurately.
----How did you find your first visit to Heilongtan Lake? -----_______.
The young man lay on the sofa with his arms _____ and soon fell asleep.
“Well done, John.! Not a single mistake _____ in your exam paper this time!”said the teacher.
-----Kathy and her sister are so alike. ------Yeah, I can’t tell one from ______.
In my view, biology is ______ chemistry, but a little easier than mathematics.