We must try our best to stop pollution ______a low-carbon(低碳)life.

No decision __about any future appointment until all the candidates have been interviewed

There are a lot of ______ of bike riding. –I agree. It’s good for environment and it saves money.

Are there ___________ students in yourschool — Yes, _____________ the studentsis about 2000.

Do you think I should get a good guidebook? — Yes, of course_____, you also need a good camera and comfortable shoes[ ]