He has read many books on science, so it's easy for him _____ these questions.[ ]A. answers B.
A. answers B. to answer C. answering D. answer
题目简介
He has read many books on science, so it's easy for him _____ these questions.[ ]A. answers B.
题目详情
A. answers
B. to answer
C. answering
D. answer
答案