---What made him so angry?
--- _______.
A. Because his son escaped from school B. His son’s escaping from school
C. His son escaped from school D. What his son escaped from school
Not until he left his home ______ to know how important the family was for him.
A. did he begin B. had he begun C. he began D. he had begun
________ you may have, you should gather your courage to face the challenge.
A. However a serious problem B. What a serious problem
C. However serious a problem D. What serious a problem
When he came to, he found himself ______ on a chair, with his hands ______ back.
A. to sit; tying B. sitting; tying C. seating; tied D. seated; tied
_______ is obviously right is that all children have equal opportunities to get education.
A. Which B. What C. That D. It
The project _______ a success as the income of the company increases every year.
A. is proved B. had proved C. has proved D. has been proved