The fireman succeeded in saving all the people in the house on fire, _______they knew they were in great danger themselves

Is there ___ in today’s newspaper—Yes, the top news is about Chinese President Xi Jinping’s visit to Pakistan.

We often have a holiday on National Day.

________it is，the boy never seems to be able to finish it off

We are supposed to recycle paper and bottles. It can help the environment.—_________. It can save money, too.