for many years,people _____ electric cars.For many years,people____electric cars.however,making them has been more difficult than predicted.A had dreamed of B have dreamed of C dreamed of D dream of

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formanyyears,people_____electriccars.Formanyyears,people____electriccars.however,makingthemhasbeenmo

for many years,people _____ electric cars.For many years,people____electric cars.however,making them has been more difficult than predicted.A had dreamed of B have dreamed of C dreamed of D dream of
for many years,people _____ electric cars.
For many years,people____electric cars.however,making them has been more difficult than predicted.
A had dreamed of B have dreamed of C dreamed of D dream of

for many years,people _____ electric cars.For many years,people____electric cars.however,making them has been more difficult than predicted.A had dreamed of B have dreamed of C dreamed of D dream of
B
好几百年以来,人们一直梦想...

确实是B

B