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题库 / Prep2008E1-SC-200
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
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b选项they指代错误，排
and后应与（can） remember并列，用tend或者tends，c选项排
tend后面是否定，只能与can remember并列，不能与remember并列，主语为单数，a选项排
tend to do，e选项排
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