A survey of opinions of experts _______that three hours of outdoor exercise a week _______good for one’s health.
_______made the school proud was _______more than 90% of the students had been admitted to key universities.
_______you want to improve your oral English, why not practice speaking English every day?
_____more and more students show little interest in her class makes her puzzled.
Social attention should be paid ________our earth from________.
---What did your parents think about your decision? ---They always let me do_____ I think I should.