单选题 In our society, aspirin is a very popular _______ for cold.

单选题 Christmas is not just a _______ holiday now. People other than Christians also celebrate it.

单选题 There has been a lot of _______ prejudice in American.

单选题 The relations between my mother and brother were getting worse as my brother grew older and more ______ .

单选题 He is an incurable idealist; it's unlike to help him come down to earth and be more _______.

单选题 Tom goes to that pub every night to have a bottle of beer. He is a _______ customer.

单选题 Friends might not be always trust-worthy, but dogs are; they have long been regarded as the most _______ company of human beings.

单选题 Ecological vehicles are made of materials that can be easily _______ once they are dumped.

单选题 To keep health, we have to keep _______ hours.