----Wake up, Tom. Time to rise.

-----I_____ asleep while I was reading.

A. should have fallen   B. must have fallen   C. could fall   D. must fall

----Wake up, Tom. Time to rise.

-----I_____ asleep while I was reading.

A. should have fallen   B. must have fallen   C. could fall   D. must fall

________ wake up the sleeping child, they didn't enter the room.

1. A.
   In order not to
2. B.
   In order to not
3. C.
   So as not to
4. D.
   so as to not

--- Wake up, Tom. Time to rise.

--- I         asleep while I was reading.

A．should have fallen        B．must have fallen       C．could fall             D．must fall

---Wake up，Peter．Time to rise.

---I      asleep while I was reading.

A．must fall                           B．could fall

C．should have fallen                  D．must have fallen