74. In a tropical rainforest, _____ that provide shelter and
resources for a diverse range of animal species.
(A) tall trees there
(B) are there tall trees
(C)there are tall trees
(D) there have been tall trees
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統計: A(8), B(7), C(106), D(4), E(0) #3254255
統計: A(8), B(7), C(106), D(4), E(0) #3254255