比较下列加横线词的意义和用法，判断正确的一项是（ ） ①奉宣室以何年 ②处涸辙以犹欢 ③臣死且不避 ④穷且益坚

_________to see us, theprofessor gave us a warm welcome.

French author Le Clezib, a brilliant novelist ________ as a child of all continents, won the Nobel Prize in literature in October, 2008[ ]

How many chapters does the bookhave -It ____ three chapters.

Mary ______ all the housework, she dropped herself into the sofa, sighing with relief.