The astronaut is so tired that he ____ for eleven hours.
#54650
A
has been asleep
B
has fallen asleep
C
has gone to bed
D
has gone to sleep
推荐题目
---Miss Hu, I have trouble __________ grammar and __________ the text.
#55875
A
with; to understand
B
on; in understanding
C
with; understanding
D
on; to understand