题目内容：

There are many Christmas cards____but I didn't know which one to buy.A.to choose B.to choose from
C.for choosing
B

优质解答

B.
choose …… from……从……里面选择出……
这里句意是从很多圣诞卡片里选择一个买走,因为后面有one.即shoose one from many Christmas cards
而如果是to choose,就表示全部选择,而不是选择一个了,与后面的one矛盾了.
C反正不合理