Question

9. — Shall I go and buy two more bottles of beer?

— No, I’ve already bought twenty. That _____ be enough for us two.

A. can    B. may     C. ought to    D. might

Answer 1

C

解析:

选C。 ought to表示“(按常理，根据一般道理，一般情况下)理应，应当”。