look mature / seem precocious / look like a grown-up

curry favor with / fawn upon / flatter

flirt with (a man) / make eyes (at a man) / play the coquette

cringe to / <c:vul.> brown-nose *someone / curry favor with / <c:sl.> kiss up to *someone / fawn upon / be obsequious to / flatter / <c:vul.> kiss [somebody's] ass

Japanese paper

low salary / small salary / low pay

overflow / run over / slop over

overflow / slop over / run over

overflow / slop over / run over

be scattered / flutter down