The special building in the middle of the square is the oldest wooden building ________. [ ]

A. in existence  

B. in silence

C. in safety  

D. in need

一般而言，当外国友人向自己赠送礼品时，应当大大方方、高高兴兴地接受下来，没有必要跟对方推来推去，过分客套。