分类：教育/科学-外语学习-英语考试
问题：①道题Therearesomanypairs____thatic 
There are so many pairs ____ that i can't decide which to buy.A.to be chenB.to choose from C.to chooseD.for chosing 
回答：B
pay attention to "so many pairs"!
A-"to be chosen" is suitable the situation where there are two things.
C-similar to A
D-people don't say so