When we visited Hainan again ten years later, we found it changed so much that we could hardly _______ it.
What did you ____ me ____? I’m a teacher, not a doctor.
The new discovery is of ________.
Once _____ , the machine will keep running.
____ in thought, he almost ran into the car in front him.
— Good morning, can I help you? — I’d like to have this watch _______.