A scrub jay can remember when it cached a particular piece of food in a particular place, researchers have discovered, and tend not to bother to recover a perishable treat if stored long enough to have rotted.
tend not to bother to recover a perishable treat if
they tend not to bother recovering a perishable treat
tending not to bother to recover a perishable treat it
tends not to bother recovering a perishable treat
tends not bothering to recover a perishable treat it
主语是a scrub jay,谓语动词用单数tends
错选了A,我觉得remember可以和tend平行,但是似乎hmmm没有can tend这种说法吧
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