Though Alice is busy, music has always been ________her work.
Do you have any idea _______ is actually going on in the classroom? (2005年辽宁省高考题)
Mary wrote an article on _______ the team had failed to win the game. (2005年全国I高考题)
Doris' success lies in the fact _______ she is co-operative and eager to learn from others.(2006年上海春季高考题)
These shoes look very good. I wonder _______. (2006年上海春季高考题)
—Could you do me a favor?—It depends on _______ it is. (2006年北京高考题)