I was given three books on sewing, the first ______ I really enjoyed.
--- If John does not come to work on time, he may be fired.---Surely he is not so foolish _________ that.
. ---I am going to see the victim’s brother.--- I’d rather you ___________.
--- What do you think of the standard of the new curriculum(课程)? --- It is certain to have a great _______ upon the future of both teachers and students.
The design isn’t successful unless it ________ people of all ages and social groups.
“Isn’t it time you ________ down to _______something useful?” said his mother.