—You must obey every word of mine!— I don’t?A. How ifB. What ifC. Such asD. Only if

问题补充：

—You must obey every word of mine!

— I don’t?

A. How if

B. What if

C. Such as

D. Only if

答案：

A. How if

(答案→)B. What if

C. Such as

D. Only if

解析：What if...意为“如果……怎么办？”是“What will you do if I don’t obey your words”的缩略。符合本题语境。