There is nothing __ I can do for you. [ ]
A. which
B. who
C. whom
D. that
D
关于第3鳃裂囊肿及瘘管，下列描述正确的是（）。
A.常恶变
B.外口位于下颌角附近
C.内附复层鳞状上皮或假复层纤毛柱状上皮
D.最常见的类型
E.双侧瘘管占50%
She didn’t come to the party last Sunday. _______, she must have made the party more exciting.
A．If she came
B．Would she come
C．Had she come
D．Did she come
