We should do what we can _____ the homeless people.

下列句子中的“之”字，分类正确的一项是（ ）①诲女知之乎　②君子之过也　 ③人皆见之　 ④小人之过也必文⑤民信之矣　 ⑥然后知松柏之后彫也　⑦闻弦歌之声　 ⑧是鲁孔丘之徒与

I’ll lend you my bike_____ you take care of it

Thanks joining the Talk Show!—You’re welcome.

She didn’t ______ work when she had the baby.