28The reason for his success is ______ he worked very hard

May I try on the jeans—Yes,you

with a bill for ＄10,000,________

Could you tell me what happened?-I’m not going to tell you about it，it’s __________.[ ]

I came all the way to inform you of the time andplace of the meeting.— You could have ________ yourself the trouble bycalling me.