—When will you come to see me,Dad?—I will go to see you when you___the training course
He teaches in ___ university and is ___expert on politcs.
Wang Ping hesitated for ___ before he ___ to the question.
--Hello, May I speak to Mr. Wang, please? ----______
They are ___ the same size. You can take ___ half of the bread.
The book ___ three yuan, but it only ___ me two yuan.