She said her family _______ themselves ______ the army during the war.
A. has hidden, from
B. had hidden, from
C. has hidden, with
D. had hidden, with
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I ______ 900 English words by the time I was ten.
A. learned learnt
B. was learning
C. had learned
D. learnt
She said she __________ the principle already.
A. has seen
B. saw
C. will see
D. had seen
He ___ in the factory for three years before he joined the Army.
A. has worked
B. works
C. had worked
D. will work
His uncle has already posted the photos to him. （改为否定句）His uncle ______ not posted the photos to him ______.
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