—Does Li Ying have a small mouth? —No, she has a wide ____. A. it B. that C. one
-______ a visit to Beijing this summer holiday? -That’s a good idea!
These animals are in danger.We should think ______ to protect them.
Either you or I ______ going there tomorrow.
Our English teacher is kind ________ helpful.
As a doctor, you can’t be ________ careful.