22. It was there, the police believe, _____ she was able to activate the recorder she kept in her bag.
–What has made him upset recently? --________alone to face a troublesome milk case.
Had Tom taken medicine just as the doctor said yesterday, he_______ quite right now.
________ in his paper, he didn’t notice his teacher coming .
________ the computer competition quite well, he won the first prize.
________ is known to all, China will be an _______ and powerful country in 20 or 30 years.