—The problem wasn’t difficult for him,was it?

—No,it wasn’t.He       a more difficult one.

A.should have been given                                  B.ought to be given

C.would have been given                                  D. must be given

---The problem wasn’t difficult for him,was it?
---No,it wasn’t.He      a more difficult one

1. A.
   should have been given
2. B.
   ought to be given
3. C.
   would have been given
4. D.
   must be given

—The exam wasn't difficult, was it?

—No, but I don't think ________ could pass it.

[　　]

---The problem wasn’t difficult for him,was it?

---No,it wasn’t.He      a more difficult one.

1. A.
   should have been given
2. B.
   ought to be given
3. C.
   would have been given
4. D.
   must be given