—    you were so late this morning?—I forgot to set the alarm before going to bed last night.

A. Why           B. How come       C. How about       D. How

—   you were so late this morning?

—I forgot to set the alarm before going to bed last night.

1. A.
   Why
2. B.
   How come
3. C.
   How about
4. D.
   How

―    you were so late this morning?

― I forgot to set the alarm before going to bed last night.

A. Why           B. How come       C. How about       D. How

1. — ________ were you so late this morning?

—I forgot to set the alarm before going to bed last night.

A．How about　　 B．Why

C．How come　 D．How