_____to his research work, the professor cared little about any other things.
62. He may have seen the film when it was shown last week, _____ he?
63. The WTO can’t _____ its name if it doesn’t include a country that is home to one fifth of mankind.
64. If _______ , English teachers must pass the oral and written tests.
65. Wit a large amount of work _______, the chief manager couldn’t spare time for a holiday.
66. The time is not far away _______ the information will be made known ______ more workers will be trained for their jobs.