Li Lei can’t play _____ chess at home.

There is ______ American boy in our class and ______ boy can speak good Chinese .

The text tells us            life story of Elias, who left            school and worked in a gold mine.

Yancheng, the hometown of Milu deer, is ________ perfect place for wildlife.

There is ______ “s” and ______ “u” in the word “bus”.