After being admitted to a famous university, only _______ it hard to adapt himself to the atmosphere, he withdrew and chose a technical school.
David said that it was______ his strong interest in literature_____ he chose the course.
The number of the people invited to the meeting ____ about 100, but a number of them ____ late because of the heavy snow.
What great trouble we had _______ where his house was.
Having retired(退休), he ______ the club for old men and plays chess every day there.
The mother asked her son_________.