.In this experiment, they are woken up several times during the night, and asked to report what they____. 
#104486
A
had just been dreaming
B
are just dreaming
C
have just been dreaming
D
had just dreamt
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All the preparations for the task _________, and we’re ready to start.
#99042
A
complete
B
have completed
C
had been completed
D
have been completed
It’s said that a car accident_____________on the highway this morning. 
#104050
A
happens
B
happened 
C
was happened
D
has been happened
—Why don't you go home?—Because a lot of work________yet.
#99166
A
hasn't finished
B
hasn't been finished
C
has been finished
D
haven't finished