题目
A.Tony make great progress in his study, and his classmate think that it is tough to stay ahead of him.
B.Tony makes great progress in his study, while his classmate thought that it is tough to stay ahead of him.
C.Tony has made great progress in his study and his classmates think that it is tough to stay ahead of him.
D.Making great progress in his study, Tony’s classmates think that it is tough to stay ahead of him.
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