—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
_______empty wine bottles stood on the back porch.
_______environmental issues, the government will enforce existing regulations.
Eliza remembers everything exactly as if it _________ yesterday.
——Do you think it necessary that he ________ to Miami but to New York? ——I agree, but the problem is ________ he has refused to.