5．I was amazed at their easy and graceful ________________ I stood there feeling somewhat confused by the food.
我惊讶于他们闲适优雅的举止，而我却站在那里对他们的食物感到有些茫然。
答案：manner while
6．It seemed to be just a bowl of grey liquid and ________________________________________________________________________________________________.
看上去那只是一碗灰色的汤，我尝了一下后才知道那实际上是用蘑菇做的。
答案：it was only after I had tasted it that I knew it was actually cooked with mushrooms
