What do you think of haze(雾霾)？ —- It ____ us we all must try to do something to stop the air pollution.

There ____ a sports meet in our school. I will take part in the long jump.

_____if he will come.[ ]

I didn’t manage to do it _____ you had explained how.

The price of this bicycle is quite _________. I don’t have enough money to buy it.