4.-What happened to the boy? He was making so much noise. -He wanted to play football, but his mother warned him ____.
A.not
B.to
C.not to
D./
正确答案是C
4.-What happened to the boy? He was making so much noise. -He wanted to play football, but his mother warned him ____.
A.not
B.to
C.not to
D./
正确答案是C