问题补充:
-----I stayed up late last night preparing the speech.
----- you look so tired today.
A. No doubt
B. No problem
C. No time
D. No wonder
答案:
A. No doubt
B. No problem
C. No time
(答案→)D. No wonder
解析:There is no doubtthat…不容怀疑;No problem没问题;No time没时间;It is no wonder that ….难怪,它的省略的形式是No wonder+句子。句意:--我昨天晚上熬夜准备演讲稿了。--难怪你今天看起来那么累。