---Answer the doorbell, please. It must be your uncle. ---It Heidi. She’s coming over this morning to help me with my math.
— Is Jay coming by bus? — He should, but he ____ not. He likes cycling along.
As we know, in the airport we’re ______ to smoke only in special areas.
It is estimated that nearly 100 million people live here, most of ______ in the west.
As for how to promote public education, Professor Li gave us a lot of suggestions which _____ reasonable and practical.
— ______ you finish your essay in time? — I am afraid ______.