After her son died in a car accident, the old lady would sit at the window, ______ out and _______ in thought.
________ wants to stay in a hotel has to pay their own way.
It was never clear ________ the man hadn't reported the accident sooner.(2011·江苏)
It doesn't matter ________ you turn right or left at the crossing—both roads lead to the park.
________ was most important to her,she told me,was her family.
It suddenly occurred to him ________ he had left his keys in the office.(2012·江西)