I think it quite that you will finish the work on time if you work hard.
A. probably
B. certainly
C. likely
D. possibly
网友回答
A. probably
B. certainly
(答案→)C. likely
D. possibly
解析：考察词性及词义辨析。A也许，可能（副词）；Ｂ当然（副词）；C可能（形容词）；D可能（副词）；本句中的likely是一个形容词作宾语补足语，前面的宾语it作为形式宾语。真正的宾语是后面的从句。句意：我认为如果你努力你就能准时完成这份工作在完全可能的。一般情况下副词是不能作为宾语补足语的。故C正确。