下列各句中，表达得体的一句是( )

Is there a fog in the evening ?—There________be . I’ll make a phone call to find it out .

Everyone of us _____ it’s important _____aseat belt in the car.

I don’t think she saw me just nowShe_________ the beautiful vases

eeling terrible and lonely allthe time, what should I do—______! Try to talk to your friends, andtake good care of your health