问题

Is Tom still in New York or already back at home–I’m not sure ________. I’ll call to make sure.
A:how he will be back
B:that he has come back
C:why he has come back
D:if he has been back;
B:that he has come back
C:why he has come back
D:if he has been back;
正确答案是:
同类题型
Tu Youyou,___85-year-old Chinese female scientist,won the Nobel Prize on Oct.5,2015.
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would you _____the story at thepoint where John left off yesterday
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