—How unhappy your roommate looks!
—Yes, but he's not willing to tell me what it is _______ is troubling him.
A.what | B.which | C.as | D.that |
推荐套卷
—How unhappy your roommate looks!
—Yes, but he's not willing to tell me what it is _______ is troubling him.
A.what | B.which | C.as | D.that |