单项选择题

If the filth ring is far from the other rings, then it means that, five years ago,

A. the climate was good for the tree

B. plenty of sunny and rainy weather occurred

C. there was plenty of sunlight and rainfall

D. all of the above

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单项选择题

A. Mary has forgotten about them. B. Peter has forgotten about them. C. Mary will send them out. D. Peter will send them out.

A. Mary has forgotten about them.
B. Peter has forgotten about them.

C. Mary will send them out.
D. Peter will send them out.

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