You can’t have finished the book yesterday, _________?。
If he takes on this work, he will have no choice but____an even greater challenge.
Developing science and technology must ____ peoplerather than harm them.
Some poems tell a story or describe something in a way ______ will give the reader a strong impression.
The university estimates that living expenses for international students ________ around $8,450 a year, which ________ a burden for some of them.