. He made another wonderful discovery, ________ of great importance to science.
Alice was______________the letter from Tom, but it didn't reach her for some reason.
Albert Einstein, ________ life had once been very hard, was given the Nobel Prize for physics in 1921
All these changes will lead to ________ strong and powerful China, _______ country that can surprise and enrich our planet.
Although they are very busy, our parents still _______ a lot of time to us.
If you are able to talk to a friend over the telephone, you feel that you are close ______ the actual distance is not shortened.