——You didn’t wait for Mr. Black last night, did you?

    ——No, but we ____. He didn’t return home at all.

A、couldn’t have   B、needn’t have   

C、didn’t need to  D、should wait have

—You didn’t wait for Mr. Black last night, did you?

    —No, but we ____. He didn’t return home at all.

    A. couldn’t have      B. needn’t have

    C. didn’t need to     D. should wait have

——You didn’t wait for Mr. Black last night, did you?

    ——No, but we ____. He didn’t return home at all.

A、couldn’t have     B、needn’t have     C、didn’t need to    D、should wait have

---You didn’t wait for Mr. Black last night, did you?
---No, but we ____. He didn’t return home at all

1. A.
   couldn’t have
2. B.
   needn’t have
3. C.
   didn’t need to
4. D.
   should wait have

— You didn’t wait for Mr. Black last night, did you?　 — No, but we ___. He didn’t return home at all.

　 A. couldn’t have　 B. needn’t have　 C. didn’t need to　　 D. should have waited