When _______ this question, she keeps silent.
______ he once felt like giving up, he now has the determination to push further and keep on going.
He wrote many children’ s books, nearly half of____ were published in the 1990s.
The meeting will be held in September, but____ knows the date for sure.
_____ the difference between the two research findings will be one of the worst mistakes you make.
Only after talking to two students ________ that having strong motivation is one of the biggest factors in reaching goals.