Air is________and of no smell but we can feel its motion when there is a wind. 

— The weather isn’t good enough for an outing, is it? — Not in the least. We can’t have __________ at this time of the year.

(湖南省雅礼中学2009届高三第七次月考 )—Are you pleased with what he has done?—It couldn’t be ________ . Why didn’t he put more effort into his work?

After his journey from abroad, Richard Jones returned home，________.

A        friend is the one who you can trust and will not leave you alone when you are in need of help.