问题
.—_______ John this week?—Yes.—Where _______ him?—In the library
A:Did you see; did you see
B:Have you seen; did you see
C:Do you see; have you seen
D:Have you seen; have you seen
B:Have you seen; did you see
C:Do you see; have you seen
D:Have you seen; have you seen
正确答案是：
