In the Gulf of Mexico the animals’ presenceclose to shore means their usual habitat is badly polluted, and the crowdingcould ________ mass die-offs as fish run out of oxygen.

She objects to _____ loud music _____ while she reads newspapers

When you are swimming, ________ your ears. You can use earplugs (耳塞) to stop water getting into your ears.

You’d better cut your hair short. Our school doesn’t _______ long hair.

I dislike _________when others laugh at me in public or think poorly of me behind