— Could you meet me at the airport?— I'd like to,but I'm afraid I ______ a very important meeting when you return.
----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.