The trains the travellers who want to go to other places.
A. used to carry
B. get used to carrry
C. are used to carry
D. are used to carrying
网友回答
A. used to carry
B. get used to carrry
(答案→)C. are used to carry
D. are used to carrying
解析：本句填一个use的被动语态，后跟一个不定式作目的状语。