摘要：-My foot hurts terribly,doctor. -Well,I wonder it has been like this. A.since when B.since then C.how D.when
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―My foot hurts terribly, doctor.
―Well, I wonder ______ it has been like this.
A. since when B. since then
C. how D. when
--My foot hurts terribly,doctor.
--Well,I wonder _______ it has been like this.
- A.since when
- B.since then
- C.how
- D.when