下列词语中，加横线字的读音全都正确的一组是（ ）

____ you pass the examination on thefirst attempt—Of course You know, I have been preparingfor it for a long time

Paper money was in _____ use in China when Marco Polo visited the country in_____thirteenth century.

The American boy is only four years old. He can swim the lake.

Is this her room—No. _______ is on the _______ floor.