According to Professor Smith, the best approach ________ a foreign language is to study the spoken language.

Do you think you can finish the project by five o’clock this afternoon —_______. I’ll be busy with my term paper all day.

If a lot of people say a film is not good , I won’t bother to see it , or I’ll wait _____it comes out on DVD[ ]

Stephen Hawking believes that the earth is unlikely to be the onlyplanet _______ life has developed gradually.

The last time we had great fun was ______ we were visiting the Water Park [ ]