问题:
—_____ is your brother?
—He is thirteen years old.
A. How
B. What
C. How old
D. When
—_____ is your brother?
—He is thirteen years old.
A. How
B. What
C. How old
D. When
—He is thirteen years old.
A. How
B. What
C. How old
D. When
参考答案: