摘要： I am not sure whether/if
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I am not sure ________ she likes seeing Beijing Opera. ________ she does, I will take her to the theatre.
[ ]
A. whether; Whether
B. whether; if
C. if; Whether
D. if; Because
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B. whether; if
C. if; Whether
D. if; Because
I am not sure _____ he will come here. ______ he comes here, please let me know.
[ ]
A. that, When
B. that, If
C. if, Whether
D. whether, When
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B. that, If
C. if, Whether
D. whether, When
I am not sure _____________ English is spoken in South Africa or not.
A. if B. whether C. that D. weather
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