【题目】He gave us a lot of help when we were in trouble, but we have nothing to give him
________.
A.in danger
B.in need
C.in return
D.in fact

【答案】C
【解析】根据句意：当我处在困境中时，他给了我许多帮助，但是我没有什么要回报给他的。“给某人以回报”用 in return。in danger处于危险中；in need 需要；in fact 实际上。