tern culture,21 was the age________ young people traditionallyreceived a key to their parents’ door, as a symbol of entering adulthood.

May I take your order-Yes. I like the beef noodles, please.

I had neither a raincoat nor an umbrella. That’s why I _____wait until the rain stopped. [ ]

______ has ridden on a railway train knows how _______ another train flashes by when it is traveling in the opposite direction．[ ]

The women carrying babies, come in first,_____ ？