Because of the continuous bad weather, the building work of the bridge over the Yangtze River is far behind
A thief slipped into the room without ______.
. The happy look on his face suggested that he ________the final examination successfully.
I would have come sooner but I ________ that they were waiting.
___________ we should do to protect wildlife?
— Do I have to clean the dining room now? — No, you ______.