From the ___ expression on her face, we knew that the problem was ____.

A．puzzling….puzzling

B．puzzled…puzzled

C．puzzling..puzzled

D．puzzled..puzzling

接待中的握手礼要求( )。

A．距受礼者约两步，上身向前倾

B．距受礼者一步，上身略向前倾

C．两足立正，伸出右手

D．四指并拢，拇指张向受礼者