题干
—Are there any students in the classroom now?
— ，only a few，I'm afraid．
— ，only a few，I'm afraid．
A：If there are
B：If some
C：If any
D：If many
答案(点此获取答案解析）
C
是两个不同的平面，
是一条直线，以下命题正确的是
