______ is a mystery. I wish that I could ask him. A. How did it B. What he did it C. How he did it D. When did it
______ is a mystery. I wish that I could ask him.
A. How did it
B. What he did it
C. How he did it
D. When did it
______ is a mystery. I wish that I could ask him.
Chọn đáp án C