It was the belief _____ Alex Haley could find his root in Africa ____ made him decide to go to Zambia.

If you are able to talk to a friend over the telephone, you feel that you are close _____ the actual distance is not shortened.

 Helen has got ________ it takes to be a great tennis player. In other words, she has the potential to become world famous.

By improving reading skills, you can read faster and understand more of _______ you read．

You will never gain success________ you are fully devoted to your work.