Although he talked half an hour, he couldn't give us a good ________ of the reason why he did it.
Father goes to the gym with us although he dislikes going there.
Listen! Do you hear someone for help?
It was in the dining hall _______ was located behind the teaching building _______ I met her for the first time.
_______ to find the book from the library, she decided to turn to her professor for help.
The Voice of China has set up a stage _______ some people can achieve their dreams.