These ________ are playing cards in the living room. (　　)

A．child

B．childs

C．children

How many ______? (   )

A．an egg

B．egg

C．eggs

汉译。
1.几张椅子?__________________
2.一本书__________________
3.四把尺子__________________
4.一支钢笔__________________
5.两支铅笔__________________
6.一些照片__________________

A brown ______. (   )

A．jeans

B．shoe

根据括号内的汉语提示填入适当的单词或词组
【小题1】Fei Junlong and Nie Haisheng are famous Chinese ________（宇航员）.
【小题2】Edison was a great ________（发明家）.
【小题3】Yao Ming is a basketball ________（运动员）.
【小题4】Is he a film star or an ________（探险家）?
【小题5】Christopher Columbus ________（发现）America.
【小题6】Eddie thinks Paul Yum is the ________（伟大）person in the world.