Peter forgot to tell you when ________.
题型:选择题
问题:
Peter forgot to tell you when ________.
A.did he call you up
B.he called you up
C.did he call up you
D.he called up you
Peter forgot to tell you when ________.
A.did he call you up
B.he called you up
C.did he call up you
D.he called up you