英语帮忙做选择题 31. We were ________ to leave before the train started. A. long B. keen C. worried D. anxious 32. **ended to make teaching her ________ . A. profession B. work C. employment D. occupation 33. The difference was ________ cross the river. A. where to B. how to C. what to D. which to 34. Mercury freezes if it is cooled to ________ . A. a low too temperature B. a too low temperature C. too low temperature D. too low a temperature 35. When it ________ table-tennis, you can never defeat him. A. goes B. is C. about D. comes