He has a great interest in ______ history, especially ______ history of the Tang Dynasty.
— Could you please explain the assignment for Monday, Miss Smith? — Certainly. Read the next chapter and come to class ________ to discuss what you’ve read.
Home is ________ somebody notices when you are no longer there.
—Mom!Jack has broken a cup! —Doesn’t matter. Accidents ________ happen.
The scientist does not study nature ________ it is useful to do so. He studies it because he takes pleasure in it.
You are hardworking and surely most of you _____ a college admission notice by the end of September this year.