It was never clear ________ the man hadn't reported the accident sooner.(2011·江苏)
The Chinese ___ less sugar and fat than many other countries in the world.
The old man was very ___ when the boy’s ball hit his windows.
--Excuse me, could you tell me ___ the nearest station? ----Sure.
As time went on, Lucy began to wonder if John ___ their date.
The teacher ___ the students not to ___ quickly when answering questions.