At first, we didn't know about Tom. But , we came to know that he was an honest boy.
A. suddenly
B. luckily
C. gradually
D. slightly
网友回答
A. suddenly
B. luckily
(答案→)C. gradually
D. slightly
解析：句意：起初，我们不了解汤姆，但是逐渐地我们慢慢地知道他是一个诚实的人。Suddenly突然；luckily幸运地；gradually逐渐地；slightly稍微地。根据句意故选C。