— David promised to come round to have supper with us today. — But he . I’ve been alone fo

问题补充：

— David promised to come round to have supper with us today.

— But he . I’ve been alone for half an hour.

A. won’t

B. hadn’t

C. hasn’t

D. doesn’t

答案：

(答案→)A. won’t

B. hadn’t

C. hasn’t

D. doesn’t

解析：考查时态。“大卫答应今天来吃晚饭。”“但是他将不会来。我已经等半小时了。”根据答语可知，大卫是不会来了。应该用将来时。故选A。