Hearing the 2009 World Winter University Games __________ open, all the people in the Harbin Sports Center Gym burst into cheers.
_____ playing dumb with teachers. They know very well their students.
They thought my suggestion reasonable _______a few experts to help them.
_____but he still couldn’t understand the logical connection of the two subjects.
It was not until he came back _____ he knew the police were looking for him.
All her time _______ experiments, she has no time for films.