"She had a few (friends). Furtive boys in pink shirts hanging about on washday after school."  The word "furtive" means (   ).
A、bold
B、audacious
C、sneaky
D、futile
"She had a few (friends). Furtive boys in pink shirts hangin - Final Exam - 高级英语 1(下) - U校园 | 大学网课搜题引擎