The lady ________ have done something wrong, because she is looking guilty.

—What does the notice on the wall say?—“No person       take books out of the reading room; otherwise he would be fined.”

It’s quite warm here; we __________turn the heating on yet.

--- May we leave the classroom now? --- No, you ____________ . You ____________ to leave before the bell rings.

Any information one wants to know about the coming National Games in Shenyang, just call 024- 62347788. It ________ be simpler.