I’m sure he will finish the report .
A. after two hours
B. in two hours time
C. within two hours
D. two-hour later
网友回答
A. after two hours
B. in two hours time
(答案→)C. within two hours
D. two-hour later
解析：原句意思，我确定他将在两个小时内完成报告。 within two hours 在两小时之内，故选C，最符合题意。