1) to give money, help, ideas etc to something that a lot of other people are also involved in contribute to/towards

City employees cannot contribute to political campaigns.

contribute sth. to/towards sth.

The volunteers contribute their own time to the project.

2) to help to make something happen　

contribute to

Alcohol contributes to 100,000 deaths a year in the US.

3) to write articles, stories, poems etc for a newspaper or magazine

contribute to

one of several authors contributing to the book

2. adopt (v.)

1) to start to deal with or think about something in a particular way

adopt an approach/policy/attitude etc.

The courts were asked to adopt a more flexible approach to young offenders.

2) to take someone else's child into your home and legally become its parent

The couple are unable to have children of their own, but hope to adopt a girl.

3. delay (v.)

1) to wait until a later time to do something

He delayed his decision on whether to call an election.

delay doing sth.

Big companies often delay paying their bills.

delay sth. until sth.

The opening of this section of the road is delayed until September.

2) to make someone or something late

seriously/badly/slightly etc delayed

The flight was badly delayed because of fog.

4. accessible (adj.)

1) easy to obtain or use

accessible to

the need for an efficient health service that is accessible to all

easily/readily accessible

Computers should be made readily accessible to teachers and pupils.

2) a place, building, or object that is accessible is easy to reach or get into

　 The island is only accessible by boat.

　There is a church which is easily accessible from my home.

3) someone who is accessible is easy to meet and talk to, even if they are very important or powerful

I think that you'll find she's very accessible.

4) a book, poem, painting etc that is accessible is easy to understand and enjoy

He wants his music to be accessible to everyone.