99. China is the biggest _____ country, while the U.S.A is the biggest ____ country.

100. My cousin wants to be a scientist and _____ science of nuclear.

101. Many English teachers like to _____ dictation _____ their students.

102. In the minority nationality the custom doesn’t ____ and has come down from generation to generation.

103. Can you _____ the difference _____ American English and British English?

104. --- What do you do in the theatre?

--- I ____ plays.

105. The waters of this great lake, which is also the world's deepest, have been ____ by waste from a chemical factory.

106. Where are my keys? They seem to have ____.

107. The Curies are best known for ____ radium and they won the Nobel Prize in 1903.

108. Dr. Manette had been mentally ____ by his long years alone in prison and his hair had turned white.