下列各项不属于旅行社主要经营业务的是（）。
A.团体旅游业务
B.散客旅游业务
C.委托服务业务
D.餐饮服务业务
参考答案：D
Andersen综合征
The weather turned out to be fine yesterday. I _____ the trouble to carry my umbrella with me.
[ ]
A. should have taken
B. could have taken
C. needn't have taken
D. mustn't have taken
