29. Впишите –s там, где это необходимо: 1) ten frog..., six frog..., one frog..., three frog...; 2) one apple..., eight apple..., six apple..., four apple...; 3) two tree..., three tree..., nine tree..., one tree...; 4) five ruler..., one ruler..., seven ruler..., two ruler...; 5) one chair..., four chair..., two chair..., three chair...; 6) eight book..., nine book..., one book..., three book...; 7) four rubber..., three rubber..., two rubber..., one rubber...; 8) ten pencil..., one pencil..., six pencil..., seven pencil....

1. ten frogs, six frogs, one frog, three frogs;
2. one apple, eight apples, six apples, four apples;
3. two trees, three trees, nine trees, one tree;
4. five rulers, one ruler, seven rulers, two rulers;
5. one chair, four chairs, two chairs, three chairs;
6. eight books, nine books, one book, three books;
7. four rubbers, three rubbers, two rubbers, one rubber;
8. ten pencils, one pencil, six pencils, seven pencils.

После числительных, кроме one, существительное употребляется во множественном числе и получает окончание -s.