—May I see your ticket, please? I think you ________ in my seat.—Oh, you’re right. My seat is upstairs. I’m terribly sorry.
He was about to tell me the secret __ someone patted him on the shoulder.
He is the only one of the students who __ a winner of three years.
The scientist did __ experiments to test the new drug.
These plants are watered __ .
Guilin is __ worth __. Have you been to it?