—What’s up? What’s that terrible noise from our upstairs neighbor?—The spoiled boy is yelling and screaming to ______, I guess.
Our teacher asked us to give all the used books to ______ needed them.
We have got plenty of time. We ______ hurry.
—Do you mind if I keep pets in the building? —______.
Can you see that building ______ by trees? That’s ______ we study.
If you keep working hard like this, it won’t be ______ you can read the English novels in the original (原著).