_____in the sports world,a sportsman needs to train constantly to keep himself in best condition.
—What did he want to know,Anne? —_______I could finish writing the report.
Ladies and gentlemen,please fasten your seat belts,the plane______.
Without facts,we can’t form a correct opinion,for we need to have actual knowledge____ our thinking.
With a good ______ of both Chinese and English,she had an advantage over the other interviewees.
He stayed up too late every night,______ to catch up with his classmates.