__________ are the pants —Oh, the black pants They are only ten dollars.

Milk will turn sour soon on hot days ______ it is stored in the refrigerator．

Newton is known as a gifted scientist withvery human weaknesses who stood at the point in history _______ magic ended andscience began

The new computers ______ to the village school. Do you know—Yes. I heard of it.

ou know you ______to be here by7:30 — Yes, I do