问题补充：
Now in the market there are too many oranges, making the prices down, so I suggest .
A. you’d better turn to do other business
B. you would rather turn to other business
C. you turning to doing other business=your turning to doing
D. you ought to turn to selling other fruits
答案：
A. you’d better turn to do other business
B. you would rather turn to other business
(答案→)C. you turning to doing other business=your turning to doing
D. you ought to turn to selling other fruits
解析：you turning to doing =your turning to doing . suggest+(one’s/sb.)doing sth./that 从句（should do ）
