The one concern for parents and students is ______ if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.
I was about to walk over to Tom's seat when he ______ and left.
All the students in this school are required to ________ at least two lectures on how to study every month.
Your desk is covered with too many unnecessary things, including used papers and books. You’d better ________ some of them.
On arrival at the flood-stricken village, the PLA soldiers set ______ rescuing the villagers.
He gave us another piece of advice, ________ of great help to the research work.