单项选择题
The area is ______ with trails, some as wide as boulevards, that have been cut and maintained by elephants.
单项选择题 When he was asked about the missing camera, the boy ______ ever seeing it.
单项选择题 She's fainted. Throw some water on her face and she may soon ______ .
单项选择题 Bill couldn't ______ an answer when the teacher asked him why he was late.