—What’s wrong with your left arm?—A bee has bitten it and it is ___.
21st Century School Edition is ____ a newspaper. It helps us to improve our English a lot.
— Would you like to ______ the discussion in our classroom?— I’d love to, but I’m ______ busy right now.
The ______ look on his face suggests that his ______ report failed the test.
I______in London for many years but I’ve never regretted my final decision to move back to China.
John received an invitation to dinner, and with his work ______, he gladly accepted it.