问题
The possibility _________ we won’t produce enough goods troubles everyone here.
A:adaptedadopted
B:So I really can’t say exactly how I’ve achieved proficiency(熟练)
C:With the help of my teacher, I learned pronunciation well
D:where
B:So I really can’t say exactly how I’ve achieved proficiency(熟练)
C:With the help of my teacher, I learned pronunciation well
D:where
正确答案是：
