My history teacher said that I ________ do better．
#39923
A
can
B
could
C
was
D
was can
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No one knew what because of the thick fog.
#39880
A
he had happened
B
had happened to him
C
had he happened
D
has happened to him
---Would you like to go and see Avatar with me tonight? --- Thank you very much , but I it already.
#41636
A
see
B
will see
C
have seen
D
am seeing
By the end of last year, they _______ 2,000 English words.
#36368
A
learned
B
have learned
C
had learned
D
learns