As we all know, the English language ________ the grammar and vocabulary that people from different countries and cultures brought to Britain.

Some insects __________ the color of their surroundings to protect themselves.

Mandela, having devoted all his life to the freedom of South African Blacks, is a real fighter for us to_________.

You cannot imagine what great trouble I took ______ your house.

If you forget ______ your watch, it is likely to stop soon.

---What about my idea?
---Very good! But not all people _______ the idea that money can bring everything.

— Why didn’t you go fishing with your friends yesterday?
— Well, fishing is an activity which     a great deal of patience, which I don’t have.

Many people worry that air pollution might       changes in the weather around the world.

Only adults are allowed to have access       the Internet in the Internet cafes in our city.