题目内容
—Could you tell us _____ to travel from Earth to Mars by spaceship?
—It takes months, I think.
—It takes months, I think.
[ ]
A. how far it takes
B. how long it takes
C. how long does it tak
D. how soon does it take
B. how long it takes
C. how long does it tak
D. how soon does it take
B
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