At night, we can see colorful lights on both ______ of the streets. A. sides B. side C. side’s
Yesterday morning I was just leaving_________the telephone rang.
---What’s wrong with you, Dave?---My homework can’t be __________ on time because I’ve left it at home.
We can’t work out the physics problem. Can you tell us ____?
— What did you do last Sunday?—_____________________.
—Wish you good luck in this English exam.—_______