These teachers try to be objective when they ________ the integrated ability of their students.[ ]

These workers preferred to work extra hours at night_________leave the work until the next week

We can put the prefix “un-” before the following words to give them the opposite meaning except (除了) ________.

He is so kind a person that he takes a friendly attitude_____us

32．The car passed through the streets__________we thought was a very dangerous speed