---- What do you think of haze(雾霾)? ---- It ____ us we all must try to do something to stop the air pollution.
--- Excuse me, could you tell me ___? ---- Sure. There is a post office at the first crossing. A. where is a post office B. where I can buy some stamp B. is there a post office near here D. how far is a post office
Look! This house is made ___ stone.
There are ___ floors in the building and my home is on the ___ floor.
English ___ in Canada.
English can help us ___ many new books and movies.