(2012·洛阳高二检测) _______ of danger in the street at night, she had to go home with a friend _______ her.

________ the important documents were needed_______.

 Square dancing ________ to help maintain fitness has caused conflicts between the Damas and the neighboring residents.

David stayed inside himself, ______ to be alone, or in a corner of the cabin.

______ more visitors, the Beijing Garden Expo Park gives roses to visiting couples.