Voices were _____ as the argument between the two motorists became more bad-tempered.
—How about the walls? —The walls are_________ thick.
__________fashion differs from country to country may reflect the cultural differences from one aspect.
Some people are too particular about school records,insisting that every applicant __________ all diplomas from elementary school to university.
It is time that the government__________measures to protect the rare birds and animals.
He speaks English as fluently as if he__________an Englishman.