问题
—The film Tangshan Earthquake will be at 7:30 pm. Shall I pick you up at 6:40 pm?—OK, I ________ you at that time.[ ]
A: was waiting for
B: shall be waiting for
C: have been waiting for
D: shall have waited for
B: shall be waiting for
C: have been waiting for
D: shall have waited for
正确答案是：
