The expert offered us another piece of advice,_____of great help to our program.
The retired man donated most of his savings to the school damaged by the earthquake in Yushu, the students to return to their classrooms.
He had a wonderful childhood, with his mother to all corners of the world.
many times, he finally understood it.
They use computers to keep the traffic smoothly.
at my classmates’ faces, I read the same excitement in their eyes.