单选题 Caller: Hello. I'm ringing about the fiat advertised in today's STAR. ______?
Mrs. Green: Yes, it is. Two or three people have rung up about it, but nobody's been to see it yet.

A、 Is it still available
B、 Is it still empty
C、 Is it still free
D、 Is it still blank

【正确答案】 A

【答案解析】[注释] 从Mrs. Green的回答来看，来电话的人是想知道房子是否已租出去了，符合这种问法的只有A选项。empty表示“空的”，free意思是“免费”或“自由”，blank表示“(纸张，表格等)空白”。