填空题 You have heard from him since last month, have you?
A. have heard
B. from
C. since
D. have
【正确答案】
【答案解析】D 应当改为haven"t。[解析] 因为在反意疑问句结构中，前面的句子为肯定结构时，问句部分要用否定。本句的意思是：“自从上个月起你已经有他的消息了，不是吗?”