21. —Why not write to apply _______ a position at Students Post?
—Good idea.
A. to B. for C. on D. with
【解析】选B。考查动词的用法。apply to适用于；apply for申请。由句意可知，应选B项。
22. The old man always said the same words _______, which made his son worried.
A. over and over again B. now and again
C. sooner or later D. more or less
【解析】选A。句意：这位老人总是反复地说同样的话，让他的儿子很担心。over and over again“反复地”；now and again“时而，不时地”；sooner or later “迟早地”；more or less“或多或少地”。
