单项选择（每题1分）We must think twice _____ we make the final decision

Tom told me that he needed a chair and soon I found _________ for him.

Which of the following words comes first in the English dictionary (字典)

No book and no pen _____ in the bag. [ ]

Wang kun : Have you looked at a map? Wang wei : What did you say just now? Wang kun : I asked you ______________.