Margaret promised to meet us at the entrance to the theater tomorrow night. She ______ for us when we get there. A. mustn’t be waiting B. could not be waiting C. ought to be waiting D. mi
Margaret promised to meet us at the entrance to the theater tomorrow night. She ______ for us when we get there.
A. mustn’t be waiting
B. could not be waiting
C. ought to be waiting
D. might have been waiting