—What do you think of Tom?
—He has been working very hard. he is an advanced worker.
A. No wonder
B. No doubt
C. No worry
D. No problem
网友回答
A. No wonder
(答案→)B. No doubt
C. No worry
D. No problem
解析： 考查短语辨析。No wonder 难怪，No doubt 毫无疑问，No worry 不用担心，No problem 没问题，句意：你认为汤姆则呢么样？他一直非常的努力工作，毫无疑问他是一个先进的工作者。所以选B。