I ______ while reading the English textbook. Luckily, my roommate woke me up in time !

1. A.
   had fallen asleep
2. B.
   have fallen asleep
3. C.
   fell asleep
4. D.
   fall asleep

I ______ while reading the English textbook. Luckily, my roommate woke me up in time !

A. had fallen asleep       B. have fallen asleep       C. fell asleep    D. fall asleep

I ______ while reading the English textbook. Luckily, my roommate woke me up in time !

A. had fallen asleep       B. have fallen asleep       C. fell asleep    D. fall asleep

I ______ while reading the English textbook. Luckily, my roommate woke me up in time !

A. had fallen asleep       B. have fallen asleep       C. fell asleep    D. fall asleep

I ______ while reading the English textbook. Luckily, my roommate woke me up in time !

A. had fallen asleep       B. have fallen asleep       C. fell asleep    D. fall asleep