Plural nouns with no singular and nouns which are singular

Put these words into the right column.

Congratulations  News   Remains  Clothes

Trousers    Athletics   Economics   Surroundings

Shorts   Outskirts   Binoculars   Sunglasses

Earnings  Jeans   Arms(=weapons)   Mathematics

Contents   Crossroads  Politics  Gymnastics

Singular	Plural

Answers

Singular	Plural
Athletics Clothes Crossroads Economics Gymnastics Mathematics News Politics	Arms Binoculars Clothes Congratulations Contents Earnings Jeans Outskirts Remains Trousers Shorts Sunglasses Surroundings