— Why do you look sad?
— There are so many problems ________. [ ]
A. remaining to settle
B. remained settling
C. remaining to be settled
D. remained to be settled
答案:C
— Why do you look sad?
— There are so many problems ________. [ ]
A. remaining to settle
B. remained settling
C. remaining to be settled
D. remained to be settled
答案:C