—I don’t know________.
—Because he has to look after his mother.
A．why he is leaving B．why is he leaving
C．whether he is leaving D．whether is he leaving
—I wonder________.
—Shandong Province.
A．when will Li yuan come
B．where Li yuan is from
C．where Li yuan came from
D．how Li yuan will come
．People in Yancheng are proud of ________ they have achieved in the past thirty years.
A．how B．which
C．what D．when
—Do you know _____I saw yesterday?
— It was my favorite star, Jackie!
A．whom B．when
C．where D．how
No one knows what _______ in fifty years.
A．will our life be like B．is our life like
C．our life will be like D．our life is like
They wonder________ robots will make humans lose their jobs or not.
A．that B．if C．whether
