Which of the following sentence is an elliptical sentence（省略句)？A．On the top of the tree

Which of the following sentence is an elliptical sentence(省略句)？

A．On the top of the trees were some birds.

B．The police found a large box under his bed, in which were so many tools.

C．He didn"t sell half as many apples as he thought he would.

D．I can"t remember which city he comes from.

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