Tom realized that he ________ his physics book at home when he reached school.
#41955
A
left
B
had left
C
was leaving
D
leaves
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-----How many times____Chang’e I____the moon ? ---Only once.It ____there last year.    
#40254
A
did..,go to / has gone
B
had… gone to/went
C
has… been to/went
D
has… gone to/has gone