题干
It is _______ difficult work that he isn't able to do it _______.
A：such, lonely
B：such a, alone
C：such, alone
D：so, lonely
答案(点此获取答案解析）
C
It is _______ difficult work that he isn't able to do it _______.
A：such, lonely
B：such a, alone
C：such, alone
D：so, lonely
