Have you used a _______ bag?
A: sleeping
B: sleep
C: asleep
D: slept
A: sleeping
B: sleep
C: asleep
D: slept
举一反三
- ______ when the telephone rang A: Were sleeping B: Did you sleep C: Have you slept D: Were you sleeping
- He<br/>fell_____during<br/>the meeting. A: sleep B: slept C: asleep D: sleeping
- I was so tired then that I fell ______ in class. A: asleep B: sleep C: sleeping D: slept
- It is difficult to get used ________ in a tent（帐篷）. A: sleep B: to sleeping C: slept D: to sleep
- It is difficult to get used<br/>____ in a tent after a soft, comfortable bed to lie on. A: sleep B: to sleeping C: slept D: to sleep