大学英语四级阅读理解试题及答案(四)Passage FourQuestions 26 to 30 are based on the following passage
On Thursday afternoon Mrs
Clarke, dressed for going out, took her handbag with her money and her key in it, pulled the door behind her to lock it and went to the over 60s Club
She always went there on Thursdays
It was a nice outing for an old woman who lived alone
At six o'clock she came home, let herself in and at once smelt cigarette smoke
Cigarette smoke in her house
Had someone got in
She checked the back door and the windows
All were locked or fastened, as usual
There was no sign of forced entry
Over a cup of tea she wondered whether someone might have a key that fitted her front door-"a master key" perhaps
So she stayed at home the following Thursday
Nothing happened
Was any